The Serbian Cross (Srpski Krst) contains a Christian cross, on each four corners of the cross is the Cyrillic letter с which is equivalent to the Latin letter s. The four с represent the term Samo Sloga Srbina Spašava which in English translates to only unity will save the Serbs, it is said that the term was first stated by St. Sava who established the Serbian Orthodox Church in 1219, thus creating an independent medieval Serbian nation with his brother Stefan Prvovencani of the Nemanja Dynasty at the helm. It is believed that Rome was vying for influence over the Serbian people at the time and that St. Sava who was pro Byzantine opposed any such Catholization of the Serbian nation thus calling for unity among his people. Some sources state that the Serbian Cross is loosely based on a Byzantine cross that was once used by that particular empire. The Serbian Cross is commonly seen on the Serbian tricolor (red, blue, white) and on other Serbian flags, it is considered a very powerful symbol to many Serbs and has been used in graffiti. The symbol is also very popular among Serbian nationalist groups. A Serbian Cross is on the top of the Shrine of St. Sava, the largest Orthodox shrine in the world.