Arbiter question

First of all wanted to ask - which of the Arbiter's attacks are impossible to survive from?

Playing HC and now at the end of the league, I wanted to experiment a little, read the Arbiter's skills on PoEDb, and I took on a fire donut bomb attack on purpose (normal diff) and died with 10k ES 78% FR. Is this a real one shot mechanic or is it possible to survive with more res/eHP? Also even with a crit, this skill's damage on PoEDb doesn't seem add up, or there's some multiplier I am missing.

Does anyone have more info?