Reflex guard

A reflex guard, known in Japan as a just guard, is an action command used to reduce the amount of hit points a member of the party loses during an enemy attack in Magical Starsign.

Magical Starsign
A reflex guard is performed by tapping on a party member the moment an enemy's attack registers. This functions to reduce the amount of hit points lost to the attack, both for physical skills and spells, though spells may have animations that change the placement of the character's hitbox. Performing a reflex guard does not directly counter the effects of affinities, nor does it prevent or reduce susceptibility to status effects.

A reflex guard can be performed even when using the regular guard command, stacking their increases to defense on that turn.