Cyril, bishop of the church at Alexandria, published various treatises on various Questions, and also composed many homilies, which are recommended for preaching by the Greek bishops. Other books of his are; On the downfall of the synagogue, On faith against the heretics, and a work directed especially against Nestorius and entitled, A Refutation, in which all the secrets of Nestorius are exposed and his published opinions are refuted.
Source: Illustrious Men (Supplement to Jerome) (New Advent)