Cross Oneself or Bless Oneself  or The sign of the cross (Latin: signum crucis), is a ritual blessing made by members of some branches of Christianity. This blessing is made by the tracing of an upright cross or  across the body with the right hand, often accompanied by spoken or mental recitation of the trinitarian formula: (In the name of the Father, and the Son, and the Holy Spirit/Holy Ghost. Amen)

The sign of the cross is a prayer, a blessing, and a sacramental. As a sacramental, it prepares an individual to receive grace and disposes one to cooperate with it. The Christian begins his day, his prayers, and his activities with the Sign of the Cross: In this way a person dedicates the day to God and calls on him for strength in temptations and difficulties. John Vianney said a genuinely made Sign of the Cross "makes all hell tremble."

Cross Oneself / Bless Oneself not only use by Catholicam to start their prayer. but sportsman, such as footballer use this ritual as their goal celebration.