SFS Standard Fluid Anatomy [reaction] Feat 5

Frequency once per hour
Trigger An enemy scores a critical hit against you with a Strike.

Your anatomy adjusts to distribute damage from vital areas. The triggering attack deals only the damage it would deal on a hit (typically normal damage instead of double damage). Any other effects of the attack caused by a critical hit still occur, such as critical specializations effects. Until the beginning of your next turn, you're off-guard against the triggering enemy.