The Strasbourg papyrus is a papyrus made of six fragments on a single leaf conserved at the Strasbourg National University Library, cataloged Gr. 254. It was first edited in 1928 . The Strasbourg papyrus contains an ancient Christian prayer, probably an Anaphora, that later formed the first part of the Coptic St. Mark's Liturgy (later known also as Divine Liturgy of Saint Cyril). The Papyrus was probably written in the fourth or fifth century, but it may present an older text, resulting to be one of the older Eucharistic Prayer known.