Resumen de Abū al-Barakāt and a lost manuscript of the Book of Philaletes by Severus of Antioch
Severus of Antioch is by far the most important author of the non-Chalcedonian churches. However, his life attributed to Athanasius of Antioch survived in few Coptic Sahidic texts and a single folio in Coptic Bohairic and three manuscripts in Arabic while there are other manuscripts that did not survive.
