Best to do the Stations in church, of course, but "online" is for anytime use.
And here is a prayer:
Prayer to the Holy Cross
Let God arise and let His enemies be scattered; and let those who hate Him flee from His presence.
As smoke vanishes, let them vanish; and as wax melts from the presence of fire, so let demons perish from the presence of those who love God and who sign themselves with the sign of the Cross and say in gladness: Hail, most precious and life-giving Cross of the Lord, for Thou drivest away the demons by the power of our Lord Jesus Christ crucified on thee, Who went down to hades and trampled on the power of the devil, and gave us thee, his venerable Cross, for driving away all enemies.
O most precious and life-giving Cross of the Lord, help me, with our Holy Lady, the Virgin Mother of God, and with all the Saints throughout the ages. Amen.