The conventional prayer of the Christians was given by Jesus to his disciples: This is called The Lord's Prayer
The Lord's Prayer, also known as the Our Father or Pater noster, is perhaps the best-known prayer in Christianity. On Easter Sunday 2007 it was estimated that 2 billion Catholic, Protestant and Eastern Orthodox Christians read, recited, or sang the short prayer in hundreds of languages.
The best known translation comes from the 1928 Book of Common Prayer
Our Father, who art in heaven, Hallowed be thy Name. Thy kingdom come. Thy will be done, On earth as it is in heaven. Give us this day our daily bread. And forgive us our trespasses, As we forgive those who trespass against us. And lead us not into temptation, But deliver us from evil. [For thine is the kingdom, and the power, and the glory, for ever and ever.] Amen.