Peter linked Muhammad with Arius and Antichrist as deniers of Christ’s divinity

Evidence

Peter sees three great adversaries whom the devil uses to lead Christians astray: Arius, Muhammad, and Antichrist. Each manages to trick his followers into denying Christ’s divinity. It is for this reason, Peter tells us, that he composed his Summa and that he had the entire Toledan corpus translated: “I translated from Arabic into Latin the whole of this sect, along with the execrable life of its evil inventor, and exposed it to the scrutiny of our people, so that it be known what a filthy and frivolous heresy it is” (Summa,§18). — John V. Tolan, Saracens, 844

Categorization

• XREF: Directly grounds the genealogy in the vault’s Anidjar/Aziz claims: the medieval framing of Islam as a Christian heresy (not a separate religion) is the root trope those scholars trace forward.
• DEEPTHINKING: The trinitarian structure — Arius, Muhammad, Antichrist as the devil’s three successive instruments — is precisely the eschatological template that later Orientalism secularizes but never fully abandons.