If Mohammed was not a prophet, then the ‘faith’ he founded is a falsehood. As Catholics we must pray for all Muslims, as they have been misled by this falsehood and only God, the God of Abraham, who sent his only Son Jesus Christ to save us, can deliver them from the evil that is Islam.
No arguments with that. That they at least are not atheists or polytheists is something. But the same can be said for demons.