fall upon
US /fɔːl əˈpɑːn/
UK /fɔːl əˈpɑːn/
1.
to attack someone or something suddenly and violently
:
•
The wolves fell upon the deer in the forest.
•
The enemy army fell upon the unsuspecting village.
2.
to become the responsibility or duty of someone
:
•
The task of organizing the event fell upon him.
•
A great responsibility falls upon those in leadership positions.