If you build the way I do, ignite can't touch this
My basic attacks alone stop ignites... igniteyness and just wait until .5seconds left of ult, and just use Q for maxium protection. The extra 250 health is nice
And if you're enemy isn't dead before your ult wears off, then you obviously deserve to be dead.
If the enemy is stupid enough to engage a tryndamere with his ult up without planning on juking or proccing the ult when they still have high health, then they deserve to die. Trynd only wins a lane when people a) let him push it early to get rage and level advantage, or b) act like idiots and try to all in a trynd at 6 or the rare c) be stupid enough to let him have the chance to land several crits on you. Once trynd activates his ult, he either should be going all in on you, or running like a little bitch. If he does the first, you just juke and ignite at the end of it, if he does the second you just chase and ignite at the end of it. Either way, there's virtually no reason for ANYBODY to lose a lane to tryndamere without lucky crits or jungler ganks. And both are avoidable.
And it's pretty pointless to talk about a late game tryndamere, because he's a late game champ. It's implied that if you let the game drag on that long that you're going to lose it, but you should really never lose the early to mid game against him.
I tested out Sivir in a bot game. She's fun.