Any pilot in a situation like that should take a page from British Airways Captain Eric Moody upon their 747-200 losing all four engines due to volcanic ash near Jakarta, here is the cabin announcement he made:
"
Ladies and gentlemen, this is your captain speaking. We have a small problem. All four engines have stopped. We are doing our damnedest to get them going again. I trust you are not in too much distress."
https://en.wikipedia.org/wiki/British_Airways_Flight_9