Having never forgotten that Magnus saved his life over fifty years before and that he swore to pay him back someday, he refused to kill Magnus, angering Sebastian and causing him to immediately stab Raphael in the heart.

Will Raphael die?

Immortality: As a vampire, Raphael is immortal. However, this does not make him invincible; he is in fact prone to death by sunlight and fire, among others.

Does Raphael and Izzy get together?

Raphael Santiago and Isabelle Lightwood's relationship took an unexpected, but celebrated, turn during the Season 2A finale of Freeform's 'Shadowhunters' when Raphael revealed to Izzy that he identifies as asexual.