SFS Standard Snap Shut [reaction] Feat 17

Source Galactic Ancestries pg. 173
Frequency once per 10 minutes
Trigger An enemy hits you with a Strike, or you attempt a Reflex save.
Your reflexes kick in as you throw your armplates in front of yourself in times of danger. You drop all held items; if you have Bulky Armplates, instead choose one arm and drop anything it's carrying. You immediately Take Cover and gain the effects of greater cover against the triggering attack.

Traits

Osharu:A creature with this trait is a member of the osharu ancestry. They are sluglike humanoids that can swim and excrete sticky slime. They spend their lives amassing knowledge. An ability with this trait can be used or selected only by osharus.