I'm repping this person cause it's actually a good strat whether or not it's working as intended.
What he's saying is if you shadowmeld the second before you cast a heal/rez, the resurrection will not show up on their Proximo since the second you shadowmeld you are removed from their focus-target. Sadly mods like Spell-Alerter will show the rez even when you're not focusing or targeting the player.
Sounds like most people in this thread just don't understand the way /focus works? Idk