What would happen if a Porygon2 Traces Zoruark's Ability, but Zoroark is illusioning another Pokemon?

Question

Let's say i have a Porygon2 and the opponent sends out a Zoroark but, it's illusioning a Regigigas. Will Porygon2 get the ability Slow Start or Illusion?

Answer 1

Trace copies the Ability of the current opponent. Trace is able to
copy Wonder Guard, but not Multitype or Illusion. If both the
Pokémon and the opponent have Trace, it will do nothing.

You can't Trace Illusion.

-Bulbapedia

Comments

Oh... sorry for someone reason i missed the part about Illusion.

Answer 2

Zoroark still keeps its ability while Illusioning. Porygon2 will not get an Ability and keep Trace, because Illusion cannot be copied.