When you or an ally within range are struck at by a ranged projectile, you appear to catch the projectile midair, unharmed. The illusion unsettles attackers, making them hesitate or doubt their aim. Even if the shot actually hits, the illusion persists - projecting effortless mastery in the face of danger.
You have a +10 to your DB against all attacks against you as long as you concentrate, while also gaing the same bonus to your spell attacks (including illusions effecting targets).
This spell also works on projectiles from spells and tech modules. It must be possible to appear to catch the projectile.
It is important to notice, that this spell does not negate any damage. It just visually appears that an attack was harmless.