The Anaphora, Eucharistic Prayer, or Great Thanksgiving is a portion of the Christian liturgy of the Eucharist in which, through a prayer of thanksgiving, the elements of bread and wine are consecrated. The prevalent historical Roman Rite from is called the "Canon of the Mass."

Christian liturgy is a pattern for worship used by a Christian congregation or denomination on a regular basis. The term liturgy comes from Greek and means "public work". Within Christianity, liturgies descending from the same region, denomination, or culture are described as ritual families.