‘Slayers’

It is a world of fantasy, where magic reigns and monsters lurk, then there’s Lina Inverse! A cute, fireball-throwing sorceress who steals from the wicked and gives to herself! Along with Gourry, a handsome but not-so-smart swordsman, Lina faces the uncanny as she seeks fame and fortune. Meanwhile Zelgadis, a powerful soldier pursues Lina in an attempt to recover a magical item that can bring about the end of the world.

Descriptions taken from AniDB.net