Sayyiduna Samurah (may Allah be pleased with him) said: When the Prophet (peace and blessings be upon him) cursed the polytheists in the prayer, he would begin with Quraysh, then after them he would follow with many tribes of the Arabs. Then it was said to him (peace and blessings be upon him) once: Curse the disbelievers of Quraysh. So when the Prophet (peace and blessings be upon him) wanted to invoke against a tribe, he would say: "O Allah, curse the disbelievers of Quraysh, Banu so-and-so."
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 7028