I tried translating it, but I think I'm missing some kind of joke... Is it a jab at finding shiny pokemon in the middle of a story heavy moment?
Don't worry about Nebby.Necrozma has stolen our light... Please chase it through the Ultra-warp ride.Good luck, we'll wait for you!Quick!Return with ultra-force!What about Necrozma!?A shiny Yanmega jumped out and scared meWow~ How nice~As expected of you!Maybe I should go next.Necrozma looked like it was in pain.Oh well... I guess I'll just go save the world real quick.