I took some interest in Otaku's question, so I decided to de-hypotheticalise it. I couldn't involve Silent Lab directly, but I found a card with similar wording.
My active Pokémon is Arbok (XY 48), and I have Latias-EX (PLF 112) on my bench. My opponent's active Pokémon is Weezing (PSL 58). I attack Weezing with Gastro Acid, shutting off Weezing's Aftermath. My opponent attacks with Smogbank. Does Latias-EX take damage?
My active Pokémon is Arbok (XY 48), and I have Latias-EX (PLF 112) on my bench. My opponent's active Pokémon is Weezing (PSL 58). I attack Weezing with Gastro Acid, shutting off Weezing's Aftermath. My opponent attacks with Smogbank. Does Latias-EX take damage?