The proselytization that is central to Christianity and Islam doesn’t exist in any religion.
Those are the only historic cultures that insist that they are right and everyone else is very wrong. Most historic cultures believed in stuff but didn’t fight and kill for it, primarily because they knew they could learn shit from other cultures.
There hasn't been much of discussion or writing about the extinction of cultures, syncretism, open border civs at the hands of Islam.
Greek / Roman / Indian influence in Eurasia to Indonesia is probably another tragedy that the world forgot.
Only pockets like Bali remain from that era now.
The sequels however cleverly mixed in a dose of politics and empire building, it isn't part of the religions per-se.
In hoc signo vinces
Zoroastrians also tried to convert, imagine the wololo move in Age of Empires.