The rajah of the island of Mactan who refused to convert to Christianity. was Lapulapu
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Explanation:
After Magellan captured the island of Cebu by assembling the so-called. blood pact with rajah Humabon, who agreed to be a vassal of the Spanish king.
The Philippine-Hispanic alliance was put to the test by raiding of LapuLapu from the neighboring island of Mactan, during which Magellan himself lost his life.
In the absence of the promised divine protection, Humabon tried to regain his position by surrendering the capture of the Spaniard.
