I came up with an answer to this Jedi thing a while ago. I invented a Jedi killing unit by turning the early Varagian Guard into a one man super-killer called a Champion I then gave him to all the Christian factions.

Then I felt bad for the Arabs, so I gave them a Master Swordsman. This was a bit of a goof because a rebel army popped up with three. They took out about a hundred guys before my Champions took them out.