Clue: King set out for audience, one resisting conquerors from abroad (6)
Answer: KLEPHT
Explanation: Definition: one resisting conquerors from abroad
**K** (king, in chess notation) + homophone [*for audience*] of **LEFT** ("set out") 
 
 
*The Klephts were Greeks who retreated to the hills when the Turks invaded their country and then spent centuries as brigands and outlaws.