Prayer of st. Thomas Aquinas 

Lord, Father all-powerful and ever-living God, I thank You, for even though I am a sinner, Your unprofitable servant, not because of my worth but in the kindness of Your mercy, You have fed me with the Precious Body and Blood of Your Son, our Lord Jesus Christ. I pray that this Holy Communion may not bring me condemnation and punishment but forgiveness and salvation. May it be a helmet of faith and a shield of good will. May it purify me from evil ways and put an end to my evil passions. May it bring me charity and patience, humility and obedience, and growth in the power to do good. May it be my strong defense against all my enemies, visible and invisible, and the perfect calming of all my evil impulses, bodily and spiritual. May it unite me more closely to you, the One true God, and lead me safely through death to everlasting happiness with You. And I pray that You will lead me, a sinner, to the banquet where You, with Your Son and Holy Spirit, are true and perfect light, total fulfillment, everlasting joy, gladness without end, and perfect happiness to Your saints. grant this through Christ our Lord, Amen (St. Thomas Aquinas) 

Soul of Christ 

Soul of Christ, sanctify me. Body of Christ, save me. Blood of Christ, embolden me. Water from the side of Christ, wash me. Passion of Christ, strengthen me. O good Jesus, hear me. Within Your wounds hide me. Never permit me to be parted from you. From the evil enemy defend me. At the hour of my death call me and bid me come to You, that with Your Saints I may praise You for age upon age. Amen. 

Prayer of St. Ignatius Loyola 

Take, Lord, receive all my liberty, my memory, my understanding, my whole will, all that I have and all that I possess. You gave it all to me, Lord; I give it all back to You. Everything is Yours. Do with it as You will, according to Your good pleasure. Give me Your love and Your grace; for with this I have all that I need. Amen