Egypt–Saudi Arabia relations
Historically, relations between the Arab Republic of Egypt and the Kingdom of Saudi Arabia could be considered as extending several centuries back to the relations between earlier regimes in Egypt – the highly autonomous Egypt Eyalet in the Ottoman Empire and the Kingdom of Egypt – and the earlier manifestations of Saudi/Wahhabi power in the Arabian Peninsula (Emirate of Diriyah). Saudi Arabia and Egypt are both highly influential countries in the Arab world.
Source: Wikipedia — Egypt–Saudi Arabia relations (CC BY-SA 4.0)