Credo in Deum Patrem omnipotentem, Creatorem caeli et terrae. Et in Iesum Christum, Filium eius unicum, Dominum nostrum, qui conceptus est de Spiritu Sancto, natus ex Maria Virgine, passus sub Pontio Pilato, crucifixus, mortuus, et sepultus, descendit ad infernos, tertia die resurrexit a mortuis, ascendit ad caelos, sedet ad dexteram Dei Patris omnipotentis, inde venturus est iudicare vivos et mortuos. Credo in Spiritum Sanctum, sanctam Ecclesiam catholicam, sanctorum communionem, remissionem peccatorum, carnis resurrectionem, vitam aeternam. Amen.

PATER NOSTER, qui es in caelis, sanctificetur nomen tuum. Adveniat regnum tuum. Fiat voluntas tua, sicut in caelo et in terra. Panem nostrum quotidianum da nobis hodie, et dimitte nobis debita nostra sicut et nos dimittimus debitoribus nostris. Et ne nos inducas in tentationem, sed libera nos a malo. Amen.

AVE MARIA, gratia plena, Dominus tecum. Benedicta tu in mulieribus, et benedictus fructus ventris tui, Iesus. Sancta Maria, Mater Dei, ora pro nobis peccatoribus, nunc, et in hora mortis nostrae. Amen.

GLORIA PATRI, et Filio, et Spiritui Sancto. Sicut erat in principio, et nunc, et semper, et in saecula saeculorum. Amen.

Domine Iesu, dimitte nobis debita nostra, salva nos ab igne inferiori, perduc in caelum omnes animas, praesertim eas, quae misericordiae tuae maxime indigent.

SALVE REGINA, Mater misericordiae. Vita, dulcedo, et spes nostra, salve. Ad te clamamus exsules filii Hevae. Ad te Suspiramus, gementes et flentes in hac lacrimarum valle. Eia ergo, Advocata nostra, illos tuos misericordes oculos ad nos converte. Et Iesum, benedictum fructum ventris tui, nobis post hoc exsilium ostende. O clemens, o pia, o dulcis Virgo Maria. 

These prayers are said in Latin, I find them to be much more powerful if used in this form. 

Here are the english translations:

A Simple Exorcism
for Priests or Laity

Prayer Against Satan and the Rebellious Angels

Published by Order of His Holiness Pope Leo XIII 

The following is a simple exorcism prayer that can be said by priests or laity. The term “exorcism” does NOT always denote a solemn exorcism involving a person possessed by the devil. In general, the term denotes prayers to “curb the power of the devil and prevent him from doing harm.” As St. Peter had written in Holy Scripture, “your adversary the devil, as a roaring lion, goeth about seeking whom he may devour.” (1 St.Peter 5,8) 

The Holy Father exhorts priests to say this prayer as often as possible, as a simple exorcism to curb the power of the devil and prevent him from doing harm. The faithful also may say it in their own name, for the same purpose, as any approved prayer. Its use is recommended whenever action of the devil is suspected, causing malice in men, violent temptations and even storms and various calamities. It could be used as a solemn exorcism (an official and public ceremony, in Latin), to expel the devil. It would then be said by a priest, in the name of the Church and only with a Bishop's permission.

---

Prayer to St. Michael the Archangel

In the Name of the Father, and of the Son, and of the Holy Ghost. Amen. 

Most glorious Prince of the Heavenly Armies, Saint Michael the Archangel, defend us in “our battle against principalities and powers, against the rulers of this world of darkness, against the spirits of wickedness in the high places” (Eph., 6,12). Come to the assistance of men whom God has created to His likeness and whom He has redeemed at a great price from the tyranny of the devil. Holy Church venerates thee as her guardian and protector; to thee, the Lord has entrusted the souls of the redeemed to be led into heaven. Pray therefore the God of Peace to crush Satan beneath our feet, that he may no longer retain men captive and do injury to the Church. Offer our prayers to the Most High, that without delay they may draw His mercy down upon us; take hold of “the dragon, the old serpent, which is the devil and Satan”, bind him and cast him into the bottomless pit ... “that he may no longer seduce the nations” (Apoc. 20, 2-3). 

Exorcism

In the Name of Jesus Christ, our God and Lord, strengthened by the intercession of the Immaculate Virgin Mary, Mother of God, of Blessed Michael the Archangel, of the Blessed Apostles Peter and Paul and all the Saints. (and powerful in the holy authority of our ministry)*, we confidently undertake to repulse the attacks and deceits of the devil. 

Psalm 67 

God arises; His enemies are scattered and those who hate Him flee before Him. As smoke is driven away, so are they driven; as wax melts before the fire, so the wicked perish at the presence of God. 

V. Behold the Cross of the Lord, flee bands of enemies. 
R. The Lion of the tribe of Juda, the offspring of David, hath conquered. 
V. May Thy mercy, Lord, descend upon us. 
R. As great as our hope in Thee. 

(The crosses below indicate a blessing to be given if a priest recites the Exorcism; if a lay person recites it, they indicate the Sign of the Cross to be made silently by that person.)

We drive you from us, whoever you may be, unclean spirits, all satanic powers, all infernal invaders, all wicked legions, assemblies and sects. In the Name and by the power of Our Lord Jesus Christ, + may you be snatched away and driven from the Church of God and from the souls made to the image and likeness of God and redeemed by the Precious Blood of the Divine Lamb. + 

Most cunning serpent, you shall no more dare to deceive the human race, persecute the Church, torment God's elect and sift them as wheat. + The Most High God commands you, + He with whom, in your great insolence, you still claim to be equal. “God who wants all men to be saved and to come to the knowledge of the truth” (I Tim. 2,4). God the Father commands you. + God the Son commands you. + God the Holy Ghost commands you. + Christ, God's Word made flesh, commands you; + He who to save our race outdone through your envy, “humbled Himself, becoming obedient even unto death” (Phil.2,8); He who has built His Church on the firm rock and declared that the gates of hell shall not prevail against Her, because He will dwell with Her “all days even to the end of the world” (Matt. 28,20). The sacred Sign of the Cross commands you, + as does also the power of the mysteries of the Christian Faith. + The glorious Mother of God, the Virgin Mary, commands you; + she who by her humility and from the first moment of her Immaculate Conception crushed your proud head. The faith of the holy Apostles Peter and Paul, and of the other Apostles commands you. + The blood of the Martyrs and the pious intercession of all the Saints command you. + 

Thus, cursed dragon, and you, diabolical legions, we adjure you by the living God, + by the true God, + by the holy God, + by the God “who so loved the world that He gave up His only Son, that every soul believing in Him might not perish but have life everlasting” (St.John 3, 16); stop deceiving human creatures and pouring out to them the poison of eternal damnation; stop harming the Church and hindering her liberty. Begone, Satan, inventor and master of all deceit, enemy of man's salvation. Give place to Christ in Whom you have found none of your works; give place to the One, Holy, Catholic and Apostolic Church acquired by Christ at the price of His Blood. Stoop beneath the all-powerful Hand of God; tremble and flee when we invoke the Holy and terrible Name of Jesus, this Name which causes hell to tremble, this Name to which the Virtues, Powers and Dominations of heaven are humbly submissive, this Name which the Cherubim and Seraphim praise unceasingly repeating: Holy, Holy, Holy is the Lord, the God of Hosts. 

V. O Lord, hear my prayer. 
R. And let my cry come unto Thee. 
V. May the Lord be with thee. 
R. And with thy spirit. 

Let us pray. 

God of heaven, God of earth, God of Angels, God of Archangels, God of Patriarchs, God of Prophets, God of Apostles, God of Martyrs, God of Confessors, God of Virgins, God who has power to give life after death and rest after work: because there is no other God than Thee and there can be no other, for Thou art the Creator of all things, visible and invisible, of Whose reign there shall be no end, we humbly prostrate ourselves before Thy glorious Majesty and we beseech Thee to deliver us by Thy power from all the tyranny of the infernal spirits, from their snares, their lies and their furious wickedness. Deign, O Lord, to grant us Thy powerful protection and to keep us safe and sound. We beseech Thee through Jesus Christ Our Lord. Amen. 

V.  From the snares of the devil, 
R.  Deliver us, O Lord. 

V.  That Thy Church may serve Thee in peace and liberty: 
R.  We beseech Thee to hear us. 

V.  That Thou may crush down all enemies of Thy Church: 
R.  We beseech Thee to hear us. 

(Holy water is sprinkled in the place where we may be.) 

The above should not be attempted by anyone except laity or clergy.  

		First Joyful Mystery - The Annunciation When Adam and Eve sinned in Paradise, they lost their right to happiness. But God promised to send His only Son to regain this happiness for them. Out of all the world, God chose Mary to be the Mother of His Son. One day the Angel Gabriel from heaven appeared to her. "Hail, full of grace!" he cried. And he told her that she was to be the Mother of the Most High. Mary answered, "Behold the handmaid of the Lord!" At that moment the Second Person of the Blessed Trinity, God’s Son, entered the world. This is called the Incarnation.
		Second Joyful Mystery - The Visitation The Angel Gabriel told Mary that her cousin Elizabeth, though an old lady, was to have a little son. This son was St. John the Baptist. So immediately Mary hurried over the hills to take care of her cousin. When Elizabeth saw her, she cried, "Blessed art thou among women, and blessed is the fruit of thy womb." Mary answered by singing the Magnificat. Mary stayed with her cousin until John the Baptist was born. She was Elizabeth’s little nurse and maid servant. When John was born and Elizabeth was strong again, Mary returned to her own home to wait for the birth of her own dear Son, Jesus.
		Third Joyful Mystery - The Nativity The proud Roman Emperor ordered all his citizens to pay their taxes in their home cities. So Joseph, the husband of Mary, and Mary traveled to Bethlehem. Bethlehem was so full of visitors they could not find a place to sleep. So they went out to a little stable in a hill. And there Jesus, the Savior of the world, was born. A glorious star shone in the heavens. Angels sang, "Glory to God in the highest and on earth peace to men of good will!" Shepherds came to adore the newborn King. Wise Men from the east brought Him lovely gifts. Mary was deeply happy. She lifted Him high for the world to see. This was the first Christmas.
		Fourth Joyful Mystery - The Presentation All men and women are the children of God. The holy Jews carried each first born son to the Temple and offered him to God. Then in his place, they gave God a lamb or, if they were poor, a pair of pure white doves. So Mary carried her Son to the Temple. She offered Him to God. Then, because she was poor, she offered in His place two white doves. But a great prophet called Simeon saw the Baby and knew this was the Savior of the world. He cried aloud in his joy. And a wise old lady named Anna blessed Him and His dear Mother. Then Mary carried her Son home again. She was His beloved nurse and teacher and protector.
		Fifth Joyful Mystery - The Finding in the Temple The Jewish Temple was God’s house on earth. When Jesus was twelve years old, Joseph and Mary took Him to Jerusalem where the Temple stood. Jesus loved His Father’s house. So when Mary and Joseph returned to Nazareth, their home town, He stayed behind. He knew that God wished Him to stay longer in His Father’s house. Soon Mary and Joseph found that Jesus was lost. They hurried back to the Temple. For three days and nights they looked everywhere for Him. Finally, they found Him seated among the doctors and priests. He was asking them wise questions and teaching them about the Savior. He did this because this was "His Father’s business." Then quietly He returned to Nazareth with Joseph and Mary and for the rest of His youth, He was perfectly obedient to them.
		First Sorrowful Mystery - The Agony in the Garden Everyone who commits a sin is a criminal against the good God. So he should be punished. But Jesus, our Saviour, came to take the sinner’s place. He asked God to punish Him instead of us who really are the guilty ones. This suffering of Christ we call His Passion. On Holy Thursday after He gave us the Blessed Sacrament, He went into a lonely garden called Gethsemane. He looked ahead and saw all He was going to suffer. He saw all our sins, ugly, filthy, evil. And the thought of His Passion and our sins made Him sweat blood. This blood poured down upon the ground in His agony. Then Judas came with the soldiers. Like a traitor he kissed Jesus. The soldiers led Him away to death.
		Second Sorrowful Mystery - The Scourging Pilate, the Roman Governor, knew that Jesus was not guilty. But all the people cried out for His death. And because Jesus had taken our place, God, His Father, was willing to let His Son die. Pilate ordered Him to be whipped. The soldiers fastened Him to a stone column. Then with heavy whips, they beat His back. Jesus suffered terribly from this scourging. But He did not cry out. For He knew who many people commit sins with their bodies. We sometimes call these the sins of the flesh. So He wanted to suffer for their sad sins. He wanted us to be strong against this kind of ugly sin.
		Third Sorrowful Mystery - The Crowning with Thorns Jesus was the King of Kings, the King of the Jews. But the Roman soldiers thought this was funny. "Still, let’s pretend that He is," one of them cried. "For a joke let’s make Him a crown." So they picked up a branch of cruel thorns, and made it into a crown. They pushed it into the head of our Savior. It hurt Him terribly. The blood ran down into His eyes. The thorns tore His skin and reached toward His brain. Then the soldiers put a reed in His hand. They threw a dirty red cloak over His shoulders. They laughed at Him and cried, "Hail to the King!" Jesus suffered all this because of our sins of thought and pride.
		Fourth Sorrowful Mystery - The Carrying of the Cross Pilate heard the people cry out, "Crucify Him!" So Pilate ordered Him to be nailed on a cross. But first He had to carry His own cross up to the top of Calvary. The cross was very heavy. The soldiers put it on His shoulder and it rubbed against His torn flesh. They dragged Him through the city and up the hill to die. The people laughed at Him and threw rocks and mud. When He fell, the soldiers kicked Him to His feet. Once along the way, He met Mary, His Mother. But she could do nothing to help her dear Son. Veronica ran out of the crowd and wiped His face with her veil. Some good women wept for Him. And Simon was forced to help Him carry the cross.
		Fifth Sorrowful Mystery - The Crucifixion For three hours our dear Lord hung on the cross. He was taking on Himself the punishment for our sins. He prayed to His Father in heaven, "Father, forgive them." He forgave the terrible sinner who became the Good Thief. He gave us His own dear Mother. He cried out because He was thirsty for our love. At length, He knew that God had forgiven our sins. Once more, we had the right to enter heaven. So He dropped His head and died. "Greater love than this no man hath than to lay down his life for his friends."
		First Glorious Mystery - The Resurrection Christ died on Good Friday. He was buried in the Holy Sepulchre. For three days He lay dead. Soldiers guarded the tomb. The Roman Governor, Pilate, placed on the heavy door the seal of Rome. Then Sunday morning dawned. Beautiful light appeared in the sky. The soldiers saw light pouring from the grave where Jesus lay. The great, heavy stone rolled away of itself. And Jesus, glorious, strong, beautiful, and alive, came forth from the tomb. He visited His dear Mother and thanked her. He showed Himself to Mary Magdalen who was weeping for Him. He appeared to His Apostles. He proved to us that we shall live forever. This was the first Easter.
		Second Glorious Mystery - The Ascension For forth days Jesus remained on earth after His Resurrection. He established His Church and gave it wonderful powers. He talked to His friends, telling them about heaven, and about the work they must do first for God and souls. Then one Thursday, He took them all up on Mount Olivet. He gave them His last instructions and said goodbye. Slowly by His own power, He began to rise from the earth. He stretched out His hands to bless them. He smiled down for the last time upon His Mother. At last a cloud covered Him, and He entered the joys of heaven. An angel then came to the Apostles and told them to go back and begin to work for souls. Some day they too would enter heaven and be happy forever.
		Third Glorious Mystery - The Descent of the Holy Ghost Christ had promised the Apostles, "I will send you the Holy Spirit. He will be your Comforter." After Jesus left them, the Apostles were afraid. So they hid themselves in the little apartment of Mary. They prayed and waited for nine days. This was the first Novena. Then on Pentacost, over their heads, the Apostles saw parted tongues of fire. A tongue settled on each of their heads. The Holy Spirit had come. At once, they went out and began to tell everyone about Jesus. They spoke so strongly that thousands believed and were baptized. This was the birthday of the Catholic Church.
		Fourth Glorious Mystery - The Assumption For a long time, Jesus left His Mother on earth. He wanted her to take care of His Apostles, and be the Mother of the new Church. Then one day He quietly sent for her, and with a smile she died. The Apostles came from all over the earth to be at her deathbed. They carried her body to her grave and laid it gently in the ground. Saint Thomas came late, after the burial. When the Apostles took him to the grave, they found it empty and open. Where Mary’s body had rested, beautiful lilies were growing. Jesus had sent His angels to bring the body of His Mother to heaven. It was too pure to rest in the earth. It had served Him so well that it must at once enjoy the happiness of heaven.
		Fifth Glorious Mystery - The Coronation Mary had served Jesus all her life. She had loved and served God with her whole heart and soul. She had never committed the slightest sin. So in heaven she was to have her reward. Body and soul, Mary entered heaven. Her Son, Jesus, met her and took her in His grateful arms. The heavenly Father said, "This is My dear devoted daughter." The Divine Son said, "This is My dear faithful Mother." The Holy Spirit said, "This is my sweet, pure bride." And the saints and angels all cried, "This is our Queen!" So Jesus, the King of Kings, seated her on her throne. On her head He placed a glorious crown of stars. But Mary looked down to see her children on earth. For now she could help her sons and daughters to reach heaven. Mary is the Queen of Heaven. But she is our loving Mother who protects us with her power.

Eternal rest grant unto them, O Lord, and let perpetual light shine upon them. May they rest in peace! Amen. 

Daily Offering 
God the Father, I thank Thee for creating me.  God the Son, I thank Thee for redeeming me.  God the Holy Ghost, I thank Thee for sanctifying me; infuse into my thoughts, words and actions Thy grace, so that they may be supernaturally pleasing to Thee and supernaturally rewarding to me, forever. 

O Blessed Trinity, abundantly assist me in becoming that which Thou intended me to become when Thou created me, for in that perfection I will give Thee the glory Thou desirest of me, and in that perfection I will find my greatest joy in heaven.  Amen.