Not to my recollection... But I would've expected him to get nervous in the Eternal Rift, I mean it's yet another floating fortress with edges that are very easy to fall off! Exdeath could just hover in the air and it would spook Bartzy-boy. (Actually if Kuja weren't such a delicate little waif then he could've won his battle with Bartz simply by lifting him up in the air with him as he glided upwards until Bartz screamed "UNCLE!!!")