Well I will tell you what I tried doing.
My tech path was Mining -- Bronze -- Iron
My capital had 6 iron, got right on it(so that I could build my defense as soon as possible)
and settled second city on 2 irons
But before I could work on my iron, the enemy had 5 Mohawk by me, his capital was no more than 5-6 tiles away from mine, so it was pretty easy for him to rush me. when he was literally at my capital I got the iron, and i upgraded 4 of my jaguars into swordsmen, but now he had 7-8 Mohawks. Also Early in this game most tiles are forest so the Mohawks got the advantage since jaguars only work on jungles which there were none.
After a few turns, my capital had fallen.
Any Tips? for Iroquois that appear really close to you, and you pretty much know they will come after you?
P.S this is for online games