Sayings:

Make the sign of the Cross assiduously: it is a wordless prayer. In a brief moment, independent of sluggish words, it gives expression to your will to share in Christ’s life and crucify your flesh, and willingly, without grumbling, to receive all that the Holy Trinity sends. Moreover, the sign of the Cross is a weapon against evil spirits: use this weapon often and with reflection. – Tito Colliander

 

See Rituals: Veneration of the Cross in Part 2 of Comparative Theology by H.H. Pope Shenouda III