Fighting kayle was a living hell, and tryndamere? he's just a pain in the butt when he's on the enemy team. They can build full damage, ult, and proceed to take 0 damage "wait till they run out" Not everyone can just wait till they run out, or outrun/outsurive them.
Meserion1 votesThey can both be affected by CC, so the trick is to blow your CC on them when they trigger those effects. Also those abilities are ultimates in both cases with a heavy cooldown, thus it is reasonable.
AgeOfTheMage1 votesnot every champ has cc
SithesisLord1 votesNo, but you play Fiora.
Just Riposte Kayle's Q and suddenly she loses 200% of her dueling power because of Fiora's bullshit AS slow.
jwebb01131 votesstill tilted over losing to kayle as fiora ?
AgeOfTheMage1 votesConsidering the match had just happened before I made this post I'd say I was pretty tilted.
Meserion1 votesEven if you champion doesn't have CC, there are options: 
or items like 
All these can be used to disengage or simply wait out the invulnerability effect. Tryndamerre's lasts for 5 seconds an Kayle's lasts 2.5 seconds.