The East Syriac Rite or East Syrian Rite, also called the Edessan Rite, Assyrian Rite, Persian Rite, Chaldean Rite, Nestorian Rite, Babylonian Rite or Syro-Oriental Rite, is an Eastern Christian liturgical rite that employs the Divine Liturgy of Saints Addai and Mari and the East Syriac dialect as its liturgical language. Wikipedia