While there were many crusades against the ummah and many jihads against Christendom, there will still through out still many enough on both sides through history who viewed each other from branching from the same tree.
Whenever you were an Eastern Roman monk writing about the new heretic sect from Arabia or an Andalusian Imam writing about the fellow followers of the book who fell for lies.
Now I just had an idea in mind about if we could have a scenario post the Umayyad Caliphate where we could see a large number of Christian and Islamic states banding together to defend/fight against an non Abrahamic enemy? It could be outside or inside the Abrahamic world. Perhaps a large heathen nation, like a steppe people from Central Asia, or perhaps a powerful individual inside, who one day went insane and proclaimed himself the Antichrist/Dajjal.
Are there any ways where an outside force could be strong enough and simply so despicable in their practice that both Muslim and Christian lords not only politically but also for religious reasons join hands?
That seems more likely than a Muslim or Christian lord close enough to both declaring himself to the personification of evil and have enough power to get the attention of both sides before being ripped apart by literally anyone else living in said lands.
Whenever you were an Eastern Roman monk writing about the new heretic sect from Arabia or an Andalusian Imam writing about the fellow followers of the book who fell for lies.
Now I just had an idea in mind about if we could have a scenario post the Umayyad Caliphate where we could see a large number of Christian and Islamic states banding together to defend/fight against an non Abrahamic enemy? It could be outside or inside the Abrahamic world. Perhaps a large heathen nation, like a steppe people from Central Asia, or perhaps a powerful individual inside, who one day went insane and proclaimed himself the Antichrist/Dajjal.
Are there any ways where an outside force could be strong enough and simply so despicable in their practice that both Muslim and Christian lords not only politically but also for religious reasons join hands?
That seems more likely than a Muslim or Christian lord close enough to both declaring himself to the personification of evil and have enough power to get the attention of both sides before being ripped apart by literally anyone else living in said lands.