The Roman Missal: Proper of Saints, February (English) 8
1[February 8. St John of Matha, Confessor.—Double.]
2[Mass.—Os justi, for a Confessor not a Bishop, page xxxv. except—]
3Prayer. Deus qui. O God, who didst vouchsafe to institute by direction from heaven, through Saint John, the order of the Holy Trinity, for redeeming captives from the power of the Saracens, grant, we beseech thee, that by the suffrage of his merits, we may be delivered by thy grace from captivity of soul and body. Through our Lord, &c.