Although I'm pretty sure Obito is way stronger than Kakashi (and at this point in the battle Kakashi looks trashed tbh), I don't think Kakashi will die. Right now he and Tsunade are the top Konoha shinobi, and as it looks likely that she will die I don't think he would be killed off as well. However it could be a combination of Obito beating Kakashi but not completely killing him.