Pope Tawadros II, the 118th Pope of the Coptic Orthodox Church of Alexandria and Patriarch of the See of St. Mark Cathedral, leads mass prayers for the Egyptians beheaded in Libya, at Saint Mark's Coptic Orthodox Cathedral in Cairo, February 17, 2015 (Photo: Reuters)

A Coptic Christian cries at the Coptic mass prayers for the Egyptians beheaded in Libya, at Saint Mark's Coptic Orthodox Cathedral in Cairo, February 17, 2015 (Photo: Reuters)

A Coptic Christian attends the Coptic mass prayers for the Egyptians beheaded in Libya, at Saint Mark's Coptic Orthodox Cathedral in Cairo, February 17, 2015 (Photo: Reuters)

Pope Tawadros II, the 118th pope of the Coptic Church of Egypt, leads leads a mass for the Egyptian Christians who were killed in Libya, at the St. Mark's Cathedral in Cairo, Egypt, Tuesday, Feb. 17, 2015 (Photo: AP)

Pope Tawadros II, the 118th pope of the Coptic Church of Egypt, leads a mass for the Egyptian Christians who were killed in Libya, at St. Mark's Cathedral in Cairo, Egypt, Tuesday, Feb. 17, 2015 (Photo: AP)

Women pray during a mass lead by Pope Tawadros II, the 118th pope of the Coptic Church of Egypt, for the Egyptian Christians who were killed in Libya, at St. Mark's Cathedral in Cairo, Egypt, Tuesday, Feb. 17, 2015 (Photo: AP)

Pope Tawadros II, the 118th pope of the Coptic Church of Egypt, leads a mass for the Egyptian Christians who were killed in Libya, at St. Mark's Cathedral in Cairo, Egypt, Tuesday, Feb. 17, 2015 (Photo: AP)

Pope Tawadros II, the 118th Pope of the Coptic Orthodox Church of Alexandria and Patriarch of the See of St. Mark Cathedral, leads mass prayers for the Egyptians beheaded in Libya, at Saint Mark's Coptic Orthodox Cathedral in Cairo, February 17, 2015 (Photo: Reuters)