The user can induce fanaticism, the belief in something with uncritical zeal or with an obsessive enthusiasm. This could range between the user winning people over to their side of the battle against their will, to even causing others to worship them like a god.
After contracting leukemia, Sheri (C Me Dance) was blessed by divine powers with the ability to convert those she touches and/or preaches to into Christianity, regardless of their previous temperament or ideology.
Jasmine (Angel) causes those in her presence to see her as a divine being, effectively causing world peace.
Diagon (Ben 10: Ultimate Alien) is an eldritch entity who was able to turn every human-being on Earth into followers of his cult.
Sartorius (Yu-Gi-Oh! GX) causes those who lose to him in a Duel to become fanatical members of his cult - the Society of Light - despite any and all critical thinking.
Those who view SCP-1592 - Paradise Television (SCP Foundation), among many other horrifying effects, causes those to believe and fanatically watch SCP-1592 regardless of any social obligations or previous beliefs.
Using the magical ruby in his rosary, Don K. Ristmas (Grindhouse and Watercolors) has amassed a cult that worships him like a god and follows him blindly.
Dark Samus (Metroid Prime series) can use Phazon corruption to brainwash other sentient beings into becoming her followers, including an entire fleet of Space Pirates, Ridley, and three bounty hunters sent to stop her.