Empyrion

Stephen R. Lawhead's saga including The Search for Fierra and The Siege of Dome.

Tropes found in the series:

 * Deadpan Snarker: The four Travelers tend to do this when they're in the Blighted Lands.
 * Embarrassing Nickname: A lovestruck Pizzle lets Starla call him "Pizzy", a nickname he apparently hates.
 * Title Drop
 * If You Kill Him You Will Be Just Like Him: The Fierri go by this rule.
 * Bitter Almonds