The Orthodox faith has a special cross as a symbol of their faith. It is made up of two horizontal, and one diagonal bar crossing a vertical pole.
The Catholic faith's main symbol is the crucifix. A crucifix is a just a regular cross that bears the image of Jesus being crucified. It also symbolizes the release of the soul in death.
The official symbol of the Methodist faith is the Cross and Flame. The Cross and Flame symbolizes Christ, the flame, and the Holy Spirit of pentecost. Another symbol for the Methodist faith is the Trefoil cross which symbolizes the Holy Trinity.
The official symbol of the Presbyterian faith is a Celtic cross with flames on either side of it. The upper part of the cross is formed by a dove descending to earth. The cross symbolizes the incarnate love of God in Jesus Christ, and his passion and resurrection. The dove is a sign of the Holy Spirit and the flames represent the Holy Trinity.
One of the Lutheran faith's main symbols is the Luther's Rose. It was made to symbolize Martin Luther's (founder of the Lutheran religion) personal theological beliefs. But today, it is generally used to symbolize the Lutheran Church.