Talking to Emilia, sombre yet meaningful: " You're going to be alright, Emilia. Do you remember the promise I made you when I became your guardian? I promised I would never let anything hurt you, not now, not ever. I'll keep that promise, but for now I need you to be brave and get in the escape pod, this place is going to fall apart beneath our feet and you won't survive if you stay here. Please Emilia, you can do it, alright? No need to cry, I promise I'll come down to Earth and I'll help you once more... Okay..? " 

Improvise here, something distraught sounding as he watched Emilia's escape pod blow up, swearing is allowed, he's traumatised by what he's witnessed. Emotions can vary between sobbing, anger or anything you think would fit.

Talking to Moss, annoyed yet mildly intrigued: " So after you come here and disturb my solitude, all you have to offer me is 'unlimited power?' ...Tch... Fine, you have one chance to show me this power, but if this is some sort of trick, some kind of sick game to get YOUR way, you're dead meat, Robotnik. Make this offer worth both our time. "