This happens quite a bit. Even pros have it happen. Always I mean always keep your thumb around the handlebar. Lots of people do it with their palm and if you get a kickback their is nothing to keep the bar from hitting your face. Thumb lock it in and you can react to a kickback. Also cutting with the tip. If you just have to keep a death grip on the handle bar.
Unless you're Superman you're not going to be able to muscle out of or react to a large unexpected kickback.
The kickback where the bar shoots up towards your head is caused when the top front (90°) of the nose of the bar comes into contact with the wood. Happens super fast. Chain brakes are designed to help prevent injuries from these types of kickbacks, but a good helmet won't hurt.