One shot by Trial of Sekhemas Trap after killing 2nd boss

After you kill the second boss in the trial of Sekhemas, there are orbs that activate that start to shoot bolts around the room. I got hit with one after I killed the boss while looking at loot.

This proceeded to one shot my full 1,828 health bar that I have 52% cold res on, as well as 81% blocked elemental damage from hits using armour. I feel like this isn't very fair to the player, and I lost my whole run to stop and look at the loot the boss dropped.