The pope visited an enclave of the Central African Republic capital where 15,000 Muslims are trapped.
Africa's Catholic population has grown by 238 percent over the past 35 years.
Security for the pope is the heaviest ever seen.
Pope will visit a mosque while in Central African Republic.
LGBT activists want Pope Francis to speak up against discrimination in Uganda, where homosexuality is illegal.
The pope said that religion "must never be used to justify hatred and violence."
The pope will address President Kenyatta and visit a Nairobi slum while in Kenya.
Thousands of police are being deployed as the pope plans to visit a hotbed of Christian-Muslim violence