5. Damage Avoidance
Phase Acrobatics: This keystone is an excellent defense to prevent spell hits from landing, particularly for certain AoE spell-based insta-kill mechanics.
Spellslinger and Mind over Matter: If you're using a spellcaster build, consider Mind over Matter for Path of exile currency mitigating incoming damage by diverting it to your mana pool. This helps prevent getting one-shotted when caught in an AoE or high-damage burst.
Endurance Charges: Use Endurance Charges (via Endurance Charge on Melee Stun or passives) to reduce elemental damage taken and prevent deadly hits, particularly if Zarohk’s AoE deals elemental damage.
Physical Damage Reduction: Items or passives that grant Physical Damage Reduction will help absorb damage, especially for insta-kill mechanics based on large hits, like Zarohk’s lightning AOE or pylon charges.
6. Capping Resistances (for Elemental Damage)
Make sure your resistances are fully capped, especially against elemental damage. Even if you have Physical Damage Reduction or Energy Shield, failing to Path of exile currency for sale cap fire/cold/lightning resistance can result in massive damage spikes from AoE elemental damage.
This is particularly important if you’re building for Zarohk, as his projectiles and AoEs may deal elemental damage.