Answer:
Spain colonized the Philippines with the cross (Roman Catholicism) and the sword (oppression). The Spanish colonization of the Philippines was made easy by its archipelagic physical characteristic and by the fact that there was no central government. Autonomous tribes governed by chieftains were separated from one another by mountains or bodies of water. It was easy for Spain, therefore, to pit one tribe against the other.
Another factor is that most of these tribes practiced Animism and Polytheism (belief in many gods). For them, Jesus was just one more novel god to add to their list of gods.