Medieval Christians said the rosary as Catholics still do today: by praying five decades of Ave Marias (Hail Marys), each introduced by a Pater Noster (Our Father), while meditating on three series of five mysteries each.
Medieval Christians prayed.
( z1 pray :ARG0 ( z2 person :mod ( z3 religious-group :name ( z4 name :op "Christian" ) ) :mod ( z5 medieval ) ) )