One of the most common St. Anthony prayers begins as follows: "St. Anthony, perfect imitator of Jesus, who received from God the special power of restoring lost things, grant that I may find (name your lost item) which has been lost. At least restore to me peace and tranquility of mind, the loss of which has afflicted me even more than my material loss."
The prayer concludes, "To this favor, I ask another of you: that I may always remain in possession of the true good that is God. Let me rather lose all things than lose God, my supreme good. Let me never suffer the loss of my greatest treasure, eternal life with God. Amen."
The St. Anthony prayer is a novena or a nine-day prayer. The prayer should be repeated every day for nine days in order to petition him for help finding or returning something that is lost.
To Roman Catholics, Anthony of Padua is the patron saint of the poor and lost items as well as a Doctor of the Church. One of his most famous miracles was an instance in which he was witnessed by a count holding the glowing form of the baby Jesus while in prayer. St. Anthony was canonized by Pope Gregory IX in 1232.