@Leo-j
That's Safer. Supernova shouldn't be doing that much damage to you, since it does 15/16 of your total HP. Try using a Wall spell, or Big Guard Enemy Skill if you have it, it will cut the damage to 7/16 of your total HP. Also make sure you use a Ribbon in one of your character, especially one with Esuna-All, or White Wind Enemy Skill to cure all ailments that Super Nova and Pale Horse cause.
Current PC Build
CPU - i7 8700K 3.7 GHz (4.7 GHz turbo) 6 cores OC'd to 5.2 GHz with Watercooling (Hydro Series H110i) | MB - Gigabyte Z370 HD3P ATX | Gigabyte GTX 1080ti Gaming OC BLACK 11G (1657 MHz Boost Core / 11010 MHz Memory) | RAM - Corsair DIMM 32GB DDR4, 2400 MHz | PSU - Corsair CX650M (80+ Bronze) 650W | Audio - Asus Essence STX II 7.1 | Monitor - Samsung U28E590D 4K UHD, Freesync, 1 ms, 60 Hz, 28"
