Which famous film director, French film director Julien Duvivier or Egyptian film director Youssef Chahine, won the Cannes 50th Anniversary Award for lifetime achievement?
Julien Duvivier: Julien Duvivier (] ; 8 October 1896, Lille – 29 October 1967, Paris) was a French film director. Youssef Chahine: Youssef Chahine (Arabic: يوسف شاهين‎ ‎ ; 25 January 1926 – 27 July 2008) was an Egyptian film director, he was active in the Egyptian film industry from 1950 until his death. Youssef Chahine:  A winner of the Cannes 50th Anniversary Award (for lifetime achievement), Chahine was credited with launching the career of actor Omar Sharif.
Youssef Chahine