Assad is the leader of the government of Syria. If he asks for help from Nasrallah then by any definition any help that Nasrallah supplies is the act of an "ally". Sure, it may be "wise" or it may be "foolish", but one thing it ain't is "terrorism".
Iran oil minister expects to raise production to 500,000 barrels per day post sanctions (DPA)
from the article: Bahrain: Nasrallah is a terrorist, Hezbollah must be stopped