His feastday is May 1st

Prayer to Saint Peregrine

Oh great St. Peregrine, you have been called "The Mighty,"
"The Wonder-Worker," because of the numerous miracles which
you have obtained from God for those who have had recourse to you.
For so many years you bore in your own flesh this cancerous
disease that destroys the very fibre of our being, and who had
recourse to the source of all grace when the power of man
could do no more. You were favoured with the vision
of Jesus coming down from His Cross to heal your affliction.
Ask of God and Our Lady, the cure of the sick whom we
entrust to you.
(Pause here and silently recall the names of the sick for whom
you are praying)
Aided in this way by your powerful intercession, we shall sing to God, now and for
all eternity, a song of gratitude for His great goodness and mercy.
Amen.