Well, a superhuman who's main form of defense is generating an electrostatic field of significant charge could survive. You see the Death's Star's Beam has to be comprised of either an anti matter explosion or plasma in order to do the damage it does. Upon hitting the superhuman's protective electrostatic field the beam would warp around them, rendering the attack useless. Other wise the only fictional characters that could survive this would be the White Lantern, Superman, Thor, and Shazam.