Quote Originally Posted by Zenicetus
It might have been just the overall strength of your empire, but did you also do anything special to reinforce your frontier like build forts or use blocking armies? When playing the Sassanids in RTW/BI, I remember I was able to steer the Horde away to attack a weaker faction, by placing a few forts at the mountain passes, and keeping my frontier provinces fairly well reinforced with troops.
I had the castle near to their spawn point filled to the brim and troops on the way. I was also the strongest nation to the time, still am. Hungary is still meddling with them, lovely! ^^