Having to attack the Komodo Dragon to live

Imagine having to fight off a Komodo (wikipedia) dragon in order to save your life. A Komodo Dragon is a massive lizard, as much as 3 meters long; so imagine getting caught in an island that is part of the Komodo National Park and having to face this dangerous animal. This is what happened to a group of 5 divers on a trip who went missing, and were eventually rescued after spending 2 nights on the island that does not have people living on them:

Five Europeans rescued Saturday after an Indonesia diving trip went wrong had to fight off a Komodo dragon while they were waiting to be found, according to reports. The divers -- three Britons, a Frenchman and a Swede -- spent two nights on the deserted island, which is home to the large Komodo dragon, before rangers found them Saturday. "On the beach a Komodo dragon came amongst us [Friday] afternoon," Pinel said, describing how the group had to pelt the dangerous reptile with rocks to scare it away.
They were one of two groups of divers who entered the water off Komodo National Park on Thursday and were supposed to be gone for an hour, said an employee of the dive company, Reef Seekers. The second group came back after the hour passed, but the first group failed to resurface, she said.

They were diving in seas that are dangerous because of fast tides, and that could have been a reason for their initial disappearance. The dragon is the top hunter on the island, and can attack humans and has been known to eat human corpses.