Exorcise Fever
This ritual exorcises the spirit of fever from the sick person, thus curing the disease. It only works against diseases that cause fever, though. Ashipu have other rituals for other common sorts of Middle Eastern diseases. Old forms of this ritual that appeal exclusively to ancient gods no longer work. The magician uses the old incantations but must back them up with a minor holy relic from an Abrahamic faith.
System: A single success suffices to cure comparatively mild fever-causing diseases such as common influenza. More lethal and tenacious diseases such as scarlet fever or typhoid may demand two or three successes to exorcise.