Girgashiy in Decisive Battle

Now I'm stuck on this part as well. Apparently, Girgashiy can attack my dead ragdoll body and that includes Soul Absorption, so he's indefinitely healing himself over my dead body and the NPCs are too weak to stop him. Shield of Trust literally does nothing as at Rank N it shields 0% damage from Mineral Hail.

... I finally beat it after keeping distance away with Tumble. e-e

On a related note:

“	...cast Soul Absorption on you which reduces your HP by 5% of your Maximum HP every second.	„
—Call of the Light

This is wrong. That's Holy Contagion, not Soul Absorption. The debuff applied even says "Contagion".