As i mentioned in another thread, deathshrouds in built extra damage reduction don’t work, if the received damage is greater than your current life force. See post below and the comment after mine too.
I took ~16k damage to my normal hp and about half of that in DS, as it should. However when my LF degened below 8k i got a full 16k damage which overflowed to normal hp without any reduction. Please investigate it. If its intended, inform the players about it.
https://forum-en.gw2archive.eu/forum/professions/necromancer/DS-and-damage-reduction/first#post3249048