User blog comment:Han Draco Rokan/Assistance Required: Squads, Items and Spheres for Cobalt Spirit's Waking/@comment-24570336-20150718070900

Well below is the squad recommendation that I could give you, but I gotta remind you this just in case. Graham is nothing compared to the later GQ, but at the same time you'll need to start learning more ways to beat those GQs. So good luck with them. :)

Summoner's Squad:

Alma lead (Stats or BB Spheres)

Nevsky (Stats or BB Spheres)

Reed (Stats or BB Spheres)

Eru (Stats or BB Spheres)

Lucana (Stats or BB Spheres)

Friend that Nullifies Status Ailments (Stats or Negate Ailment Spheres)

Seria's Squad:

Grahden lead (Stats or BB Spheres)

Oulu (Stats or BB Spheres)

Nick (Stats or BB Spheres)

Dean (Stats or Negate Ailments Spheres)

Kuhla (Stats or BB Spheres)

Seria guest (Preset Spheres)

Karl's Squad

Colt lead (Stats or BB Spheres)

Shera (Stats or BB Spheres)

Rigness (Stats or Negate Ailments Spheres)

Yuura (Stats or BB Spheres)

Arus (Stats or Drop Boost Spheres)

Karl guest (Preset Spheres)

As for Itemization, you should take the following:

Standard: Fujin Elixir, Fujin Potion, Revive Light, Holy Flute, Hero Crystal

Reserved: Cure, Holy Light, Revive, Crescent Dew, Goddess Idol

Once again, good luck.