I'm by no means an expert, just going off of the info I've stumbled across. Everything I read was saying that our bodies hold onto fat stores no matter the cost, and muscle is what it goes for first when the body needs energy. That seemed to be the common point across all of the various resources I found.
You will lose very little muscle if you are above 10% bodyfat and you are cutting right. When you start dipping in to single digits and you are natural, that's when you are gonna start having issues.