May we find favor in your eyes
The phrase "find favor" is an idiom which means to be approved of by someone. Also, the eyes represent seeing, and seeing represents thoughts or judgment. AT: "May you be pleased with us" (See: rc://en/ta/man/translate/figs-idiom and rc://en/ta/man/translate/figs-metaphor)
in the land of Egypt
"over the land of Egypt" or "throughout the land of Egypt"
to this day
This means to the time that the author was writing this.
See how you translated "a fifth" in Genesis 47:24.