The Numara Soldiers that you face at the Crater Island all have low physical attacks -- they hit for below 50 damage. Yet they attack you in a group of five, so that damage definitely adds up. It's also noteworthy that during this fight there is a Numara White Magician healing and casting shield, and that every few turns arrows will rain down on your party members causing damage. Still, as far as the soldiers go, two attacks and a Flare will drop them. Just target them one at a time.
