The Book of Nestor the Priest

The Book of Nestor the Priest, originally titled Account of the Disputation of the Priest (Qissat Mujadalat al-Asquf Arabic: قصة مجادلة الأسقف) or its Hebrew textual avatar Sefer Nestor Ha-Komer (written c. 900 CE) is thought to be the earliest surviving anti-Christian Jewish polemic.