That part of the world there is not much of a earth ground, bone dry earth. As I mentioned in my post, plastic flex conduit is used. All residential buildings are block and concrete and with multistory buildings such as apartments the floor are poured concrete. Before the pour flex conduit is laId down first to the area of where a wall will be. The picture above should have a ground wire.
Some interesting information but it is old.
https://www.dubai-online.com/essential/electricity/
Also many different countries build in the oil rich ME. It could be a UK, Germany, China or anyone else. The contractor will usually build to there country standards and bring in workers from there country. Look at this color chart from China.
View attachment 82822