Wiktionary
see off
vb. 1 To accompany someone to a point of departure 2 To defeat
Usage examples of "see off".
Oh, sure, we could probably see off a squadron of the flyboats the Commonwealth navy uses, but not real ships.
The day an RCN battleship can't see off a couple wogs, I'll join the priesthood.
Mon, a chance to see off a pair of pirates on the way would be more than welcome.