find grasslands south of Egypt?

Answer 1

The southern part of Sudan (the country south of Egypt) as well as the countries that border it (Ethiopia, Kenya, Uganda, Congo, etc.) have rainy seasons that create vegetation. This area is generally called Sub-Saharan Africa (because it is south of the Saharan Desert) See this map for the line in change of climate in relation to official political borders: http://en.wikipedia.org/wiki/Image:Sub-Saharan-Africa.png

Answer 2

Would u clarify please ? Asking about green areas south of Egypt ?
There are some oasis and the High Dam region is green because there's water there.