Transcript for Pope Francis defies high-security risk in Egypt as he arrives in Cairo
Reporter: But that's not what the receipt says, thanks to Obama care. Next, the pope speaking out against suicide bombings against Christian churches. Terry Moran, in Cairo tonight. Reporter: Pope Francis arriving in Cairo on a perilous mission to a troubled land. Security is very tight. Tens of thousands of armed personnel. Tanks at the pope's events and Francis' personal security detail. Authorities are taking no chances. Because the threat here is very real. Just three weeks ago, palm Sunday, two horrific bombings at Christian churches killed dozens and ISIS claimed credit. One of a series of attacks, including this bombing last December at a chapel near the main Christian cathedral where today, pope Francis prayed for the victims. And at an interfaith peace conference, Francis asked all religious leaders to fight extremism. "No act of violence can be perpetrated in the name of god, he said. For Christians here, this trip means so much. He is not afraid. He is a man of peace and he is willing to die for it. That is very courageous. Reporter: Tomorrow, Francis will celebrate an open-air mass at a stadium run by the military. Tom? Terry, thank you. There's still much more ahead on "World news tonight"
This transcript has been automatically generated and may not be 100% accurate.