If there is one group the Saudis fear and suspect more than Iran and Shiaism, it is the Muslim Brotherhood. Iran is an outside power. Brothers are available even within Saudi society and they despise monarchies just as the Prophet of Islam despised monarchies.
So, the coffers of the House of Saud have been opened for Gen. Abdel Fattah el Sisi to break the back of the Brothers in Egypt. Al Jazeera, which became a mouthpiece for the Brothers during the year that Morsi was in power, is in the process of packing up its bags in Egypt.