In the late 19th century the Nestorians were still holed up in the mountains of what is today northern Iraq, and preserved a considerable amount of literature in Syriac giving their side of the dispute with Cyril of Alexandria that culminated in the Council of Ephesus in 433.
Anthony Alcock has kindly translated an abbreviated account of this, from that perspective. I think most of us find Cyril difficult to like, and tend to be sympathetic to Nestorius. So these texts are valuable. Here it is:
Thank you so much!