2 Audio tracks are available on the UK Blu-ray release of A Prophet, both in French: one is LPCM Stereo and the other is 5.1 DTS-HD Master Audio. Optional English subtitles are available as well. That's just it I'm afraid.
Not sure this is helpful, but the US Blu-ray release has English (5.1 DTS-HD Master Audio), German (5.1 DTS-HD Master Audio). It has English, English for the hard-of-hearing, French, German and Turkish subtitles. It is coded for both Region A and B.