This document is an ancient transcription for the Mass dedicated to St. Pelagius, a martyr recognized for his faith and sacrifice. It includes prayers invoking God's presence, readings from scripture emphasizing faithfulness and divine protection, and reflections on the life and virtues of St. Pelagius. The fragmentary work encourages the faithful to seek intercession from the saint, renounce worldly temptations, and strive for righteousness, celebrating the martyr's enduring glory and the hope of eternal life through Christ.