︻デ═一 ҉ The Emperor protects...
Unless you are an Alien, Mutant, Heretic, Imperial Guardsmen, On the same planet as an Exterminatus, In the same sector as a Tyranid hive, Near the Dark Eldar, In the Blue-On-Blue area of a Titan, On a Space Hulk, Near the Eye of Terror, Sacrificial Psyker to the Emperor, A Scout Marine in any situation, Outside 10 feet of a Tau, Are wearing your helmet, Part of the Legion of The Damned, Blood Raven, Near an Ork horde, Within 30 feet of a ♥♥♥♥♥♥ off Inquisitor, Within 10 feet of a Daemon, Stuck in the Warp, Near a Necron, An Assault Marine in most situations, In front of a Baneblade, In front of a Heavy Bolter, Near a Commissar, A guardsmen who saw the Grey Knights, A Member of the Grey Knights, A Member of the Ultrasmurfs, One of the two lost Primarchs, On Prospero when it was burning, On Terra during the Horus Heresy (And not part of the Custodes), A Sister of Battle, Under the command of Boreale, Not plot essential, On Cadia, Under the command of Hairgel/Aramus, Not Tarkus, Not within 30 feet of Gabriel Angelos, A Space Marine facing bureaucratic resistance, A Space Marine facing down the Tyranid Hive Fleet, Without fire support or are all of the above.