Iran is certainly religious, nationalist and tyrannical, but I've never heard of them being genocidal.

No, it's the Israelis that are the genocidal religious nationalists. The Iranians are the authoritarian religious fanatics.

Two overly religious countries killing each other? Sounds like gods plan to me.

That's always true. But if they distract each other from committing genocide and helping Russia, respectively, the world may be generally better off, especially long-term.