What did the chi rho cross?

The Chi Rho cross, an early Christian symbol, combines the Greek letters "Χ" (chi) and "Ρ" (rho), which are the first two letters of "Christos" (Christ). It represents the significance of Jesus Christ in Christianity and was famously used by Emperor Constantine after his conversion, particularly during the Battle of Milvian Bridge in 312 AD. The symbol signifies the triumph of Christianity and is often seen in religious art and iconography.