Prince Naif bin Abdulaziz Al Saud, the Second Deputy Premier and Minister of Interior, left Riyadh this evening heading for Al-Madinah Al-Munawarah to open on Tuesday, on behalf of the Custodian of the Two Holy Mosques King Abdullah bin Abdulaziz Al Saud, the International Conference on the Phenomenon of Accusing Others of Being Infidels: Reasons, Impacts and Solutions, organized by Prince Naif bin Abdulaziz Al Saud International Prize for Prophet's Sayings and Deeds (Sunnah) and Contemporary Islamic Studies with the participation of Imam Mohammed bin Saud University. At Riyadh airport, he was seen off by a number of princes and senior civil and military officials. He was accompanied by a number of princes and officials.