Uqbah bin Amir (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said: "The diyah (blood money) of a Magian is 800 dirhams."
Only Abu Salih, the scribe of al-Layth, narrated it, and the first (narration) is more likely to be the preserved one; and Allah knows best.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الديات / 16344