Nadion Inversion is supposed to resist power and shield drain attacks, but it does not. Will this ever be fixed? Some say it helps weapons power from being drained while the weapons are firing, but I don't see this when I try it.
Nadion Inversion is only supposed to resist YOUR power drain, specifically the drain from firing multiple weapons, not power drain attacks.
It does it fairly well, but the long cooldown is a bit annoying :/ Anyway, as far as the drain, your power levels usually drop by 10 when firing multiple weapons. With Nadion Inversion, I've seen it reduced to 5 or less, which is a boost.