Samael identified as the Officer of Esav: Makkot 12a
Samael's ultimate flight, attempting to take refuge in Batzrah as a City of Refuge, for his murders: Makkot 12a
When Tamar was being taken out to be killed, Samael came and tried to remove the items which identified Yehudah as the father; Gavriel came and brought them back: Sotah 10b