I currently have two tattoos. The first one is my name, Jay Jii, written in Sanskrit on my right forearm. My name in Sanskrit literally translates into "victory."
The second one is on my left upper arm. It is the Chi-Rho symbol. Chi and Rho are the first two letters (XP) of "Christ" in the Greek alphabet. It is one of the earliest christograms. There is a great story of how Constantine I had the Chi-Rho symbol emblazoned on the shields of his army and marched to victory. The alpha and omega represent "from the beginning to the end."
"Therefore, if anyone is in Christ, he is a new creation.
The old has passed away; behold, the new has come."
~2 Corinthians 5:17