I am going to assume that you are on Redemption server. If this is the case, then I can say that both Jin and Guan have lost thier Holy stones to Fuj. The -10% damage should only affect masters [if I remember correctly, but cant log in to check atm]. During the next Holy Stone war, the Guans and Jins can try to recover thier stones, or in the meantime they can try getting the y-stone from the Fuj [I know that Guans have succeeded in doing this at least once since they lost thier Holy Stone].
Redemption: Elizabeth - M8 - Fuj [too lazy to lvl *yawns*]Dominique - M1 - Guan [heading towards Nan]