I took the soundtrack of Hurley finding the cabin, reversed it, and played it until my ears bled. Here is what I have so far, but there are more whispers in there, and what I have heard may not be right. I am really not that certain about the first one.
“It is not like they’re coming to us”
“is jacob a prisoner?”
“Are you afraid of this island?”
updated: “Hurley really is very special”
Take a listen for yourself. What do you hear?