Pope Francis has led a pep rally to boost faith at Rome's soccer stadium, packed with more than 50,000 Catholics who follow charismatic movements.

Hands raised in unison, the faithful prayed in Olympic Stadium Sunday for Francis, who repeatedly has asked his church for prayers.

Francis told the faithful the devil wants to destroy the family, which he described as the "domestic church." Bishops from worldwide will meet in Rome in October to discuss problems afflicting families.

Francis told the crowd that when he was Buenos Aires archbishop, at first he didn't "share" the way the exuberant charismatic Catholics prayed there, but later realized "charismatic renewal is a great force" for the Catholic Church.

Dynamic, evangelical Protestant groups have drawn many Latin American Catholics to their ranks.