You need to use Fire Bombs (cheap on market). Stand on the fire bomb to prevent melee hits from all sides. Lure scarabs into the fire, then spam Exori and Exori Hur.
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Pull 4-6 Ancient Scarabs and Lions. Use Exori every turn. The Lions have high health but low armor—your level 74 damage cuts through them like butter. You need to use Fire Bombs (cheap on market)