Orthodoxy today still wrestles with the anti-Judaism of the Fathers. I made the following point at a summer school session once nearly six years ago, and it was predictably not well received then. Likely it won’t be now either, but I still think it’s important to say:

Supersessionism cuts both ways. If Christians claim that the church has replaced Israel (the people, not the nation-state) in God’s plan, I don’t see how they can deny Muslim claims for the finality and perfection of the revelation to Mohammed.

I may we be repeating a point made by Muslims in Christian-Muslim debate in the middle ages. I don’t know enough about the subject to say.