Lawrence of Arabia is somewhat distasteful for its use of blackface. It's another case of a white male acting as protagonist against a backdrop of characters of other races. So its foot starts as a "mighty whitey" film, and watching it for the first time recently, the first half I found quite dull for these very reasons.
But as the TV Tropes article mentions, by the end it isn't really this at all - Lawrence ultimately fails, he doesn't unite anyone for anything, he himself is rather selfish, vain and egotistical. He wants to help the Arabs, but it's unclear how much of it he's doing for their benefits and how much is for his own thrill/hubris. He comes out looking less of a hero. It's a proper subversion of the trope well before many of the modern day lazy iterations of the trope have been implemented.