Pariah Planet by Murray Leinster

Five minutes later Calhoun had located one would-be killer behind a mass of splintered planking that once had been a wall. He set the wood afire by a blaster-bolt and then viciously sent other bolts all around the man it had sheltered when he fled from the flames. He could have killed him ten times over, but it was more desirable to open communication. So he missed, intentionally.

Maril had cried out that she came from Dara and had word for them, but they did not answer. There were three men with heavy-duty blast-rifles. One was the one Calhoun had burned out of his hiding-place. That man's rifle exploded when the flames hit it. Two remained. One -- so Calhoun presently discovered -- was working his way behind underbrush to a shelf from which he could shoot down at Calhoun. Calhoun had dropped into a hollow and pulled Maril to cover at the first shot. The second man happily planned to get to a point where he could shoot him like a fish in a barrel. The third man had fired half a dozen times and then disappeared. Calhoun estimated that he intended to get around to the rear, in hope there was no protection from that direction for Calhoun. It would take some time for him to manage it.