I think I finally won with I mastered every job with every party member.

Bartz
Freelancer
Lvl 48
!Rapid Fire
!HP+30%

Lenna
Mimic
Lvl 47
!Dualcast
!Summon
!White

Krile
Mimic
Lvl 47
!Dualcast
!Summon
!White

Faris
Freelancer
Lvl 48
!Rapid Fire
!HP+30%