What is the ACTUAL counterplay to true damage?
I just got out of a game as Vi jungle, while they had a Garen top lane. It was late game, so myself and the Garen was nearly built. I had about 2.9k health. After 1v1 a Trist to zone her out, I was left with about 1.5k (only had Omen's for armor). Garen was still alive at this time, turned on me, spun in circle (E'd), and then Ulted. Since I was his Villain, he ended up doing 1.3k true damage to me, which ended up killing me. I even Q'ed away before the animation hit but that is a whole different topic.
Now the question is, what could I have done in that situation (besides not get so low and get good)? Building health doesn't help against true damage because true damage is a counter to health, armor, and magic resist. Garen isn't the only person who does massive true damage either. A Cho'gath ultimate can also get to near 1k damage, Darius' ult does massive damage (depending on bleed levels), and lets not forget about about Irelia and Vayne auto attacking with true damage. And none of these are avoidable either, besides Zhonya's. So what can someone do when they take nearly 1k damage (or more) in true damage as a squishy, or even a tank/brusier? Is there truly a way to counter it, or is there no counter play to true damage, but to take it like a man and move on?