Depends on your priorities.

If you want to protect your bike at all costs: at the point of impact, jump. This will turn your bike into a catapult, all of the kinetic energy you have will go into pitching you forward. Your bike will have minimal kinetic energy to dissipate. You will most likely be tossed far and hard.

If you want to protect your body at all costs: do what everybody else says, tuck and roll you sissy.