But the prime minister of Lebanon has not ordered the Lebanese armed forces to resist Israel. There are no reports of even anti-aircraft fire.
Israel has made it clear that it is going after Hezbollah, although it holds the Lebanese government accountable. And the Lebanese government is accountable to the extent that they didn't launch their own offensive against Hezbollah after the Syrians withdrew.
But I'm not sure they really could have. They don't have a single fixed wing aircraft in their air force.