Celestial Aegis
Source
Drift Crisis pg. 45
As a move action, you channel the Positive Energy Plane’s power directly into your solar armor or solar shield, helping you capture and redirect your escaping life energy to bolster your body. As a reaction when you take damage that causes you to lose at least 2 Hit Points, you gain temporary Hit Points equal to half the number of Hit Points you lost from the attack or effect. These temporary Hit Points last 3 rounds.
If you’re attuned or fully attuned, you also gain spell resistance equal to 11 + your solarian level against necromancy spells, and against spells with the cold, darkness, or death descriptors.
Dragonscript
ID
4b6aca678b8a74cde7da1cb0