Psychic Lock Vs. Electrode

[Flareon]

If I attack with Gardevoir SW's Pyschic Lock, then my opponent uses Ion Blast and opts to do the 100, will they get to use the Power, Energy Shift?

The confusion is because Psychic Lock says "during your opponent's next turn" and the Power is used after the opponent attacks.

I feel like I should know this one, but I searched on the compendium and did a forum search with no luck. I'm sorry if it has already been asked

Gardevoir SW
http://pokegym.net/gallery/showimage.php?i=31855&c=162

Electrode SW
http://pokegym.net/gallery/showimage.php?i=31874&c=162

Thank you.

 

[PokePop]

Look in the rule book about resolving attacks and effects of attacks and Knock Outs.
They all happen during your turn