+1 to Count Adhemar
The rule is worded in a way that it applies always to the firer. If we fire, we ignore the effect, that our target is treated as if it had Stealth, Shrouded or can't be targeted. But when we are shot at, we don't have to ignore anything, because it applies to our opponent, who can't ignore the effect, that our units are treated as if they had Stealth, Shrouded or can't be targeted.
I must rule with eye and claw — as the hawk among lesser birds.