Grasping Vines and Chaos damage

I use a build with almost all my life reserved and Coruscating Elixir Flask for Chaos damage to be dealt by my shield.

When I encounter a mob which inflicts Grasping Vines and I am not under the effect of my Coruscating Elixir Flask, I get insta killed.

I really don't understand why. Aren't Grasping Vines supposed to only slow and not inflict damage ?

Grasping vines reduces damage taken by 2% up to 10% I believe on full stacks.

But I'm not sure if that has anything to do with why you're being killed.