Nightfyre said:
It's lolGenbu. Grab a BLM friend and duo pop items and Genbu himself. If you can't be bothered, merc it.
Zip will bash his lv 67 RDM's face in and I am guessing acquiring a water or even if he bought 1 Olla would have his way with the lower lv RDM also.
If you can buy the pop items you have a decent chance of making your gil back and possibly getting the shield.
But yea the only way you can lose to Genbu is if you don't know the kiting path or straight tank it and he get off some horrific double attack that manages to hit you.