The phrase "occupation force" refers to a group of soldiers or military personnel who are stationed in a foreign country to maintain control and authority over that area. Full definition
In paragraph 4, Resolution 1973 explicitly precludes «a foreign occupation force of any form on any part of Libyan territory.» (blog.politics.ox.ac.uk)
The invaders set up what was, by their brutal standards, a benevolent occupation force in Paris, while a new French government formed in the southern city of Vichy. (sbnation.com)
Operative paragraph 4 of the resolution also authorises Member States making the notifications so provided, and acting in co-operation with the UN Secretary - General, to take all necessary measures to protect civilians and civilian populated areas under threat of attack in the Libyan Arab Jamahiriya, including Benghazi, while excluding a foreign occupation force of any form on any part of Libyan territory. (politics.co.uk)