The Eulogy of St. Nicholas of St. Andrew of Crete is a monumental penitential hymn of the Byzantine Christian tradition, composed in the late 7th or early 8th century. It is traditionally prayed during Great Lent in the Eastern Orthodox Church, especially in the first week of Lent and again in full during the fifth week. The work is structured as a lengthy series of troparia (short hymnic verses), each functioning as a personal lament and a call to repentance. It is one of the most searching and psychologically acute texts of Christian penitential spirituality.