Not good. Not good at all. It's harder to defeat those who feel they have nothing to lose.
But it is possible. Much of the "mythology" associated with imperial Japan comes to mind.
And there have to be a large number of folks on the other side who are still concerned about the Earthly consequences, and are skeptical of a suspension of the laws of physics.
At least I hope so.
Even if they believed the suspension of natural laws would take place, what would become of their faith as soon as a demonstration of the "laws of physics" is performed? If not melted outright, I would guess a lot of jaws would drop, some literally!