Pope Francis stood Saturday for two minutes of silent prayer facing east in one of Turkey's most important mosques, a powerful vision of Christian-Muslim understanding at a time when neighboring countries are experiencing violent Islamic assault on Christians and religious minorities. The Vatican spokesman, Rev. Federico Lombardi called it a moment of silent adoration." It was a remarkably different atmosphere from Francis' first day in Turkey, when the simple and frugal pope was visibly uncomfortable with the pomp and protocol required of him for the state visit part of his trip. With President Recep Tayyip Erdogan's mega-palace, honor guard and horseback escort now behind him, Francis got down to the business of being pope, showing respect to Muslim leaders, celebrating Mass for Istanbul's tiny Catholic community and meeting with the spiritual leader of the world's 300 million Orthodox Christians. Francis' visit comes at an exceedingly tense time for Turkey, with Islamic State militants grabbing territory next door in Syria and Iraq and sending some 1.6 million refugees fleeing across the border. Some refugees were expected to attend Francis' final event on Sunday before he returns to Rome. Francis was following in the footsteps of Pope Benedict XVI, who visited Turkey in 2006 amid heightened Christian-Muslim tensions over a now-infamous papal speech linking violence with the Prophet Mohammed.