Fight them until there is no [more] fitnah: and [until] worship is [acknowledged to be] for Allah . But if they cease, then there is to be no aggression: except against the oppressors:.
Meaning:-
Fitnah:: Fitnah comes from an Arabic word which means: . Fitnah is the spread of Falsehood that cause a rift between Muslims or Spreading
Aggression:: hostile or violent behavior or attitudes toward another; readiness to attack or confront.
Oppress:: to burden with cruel or unjust impositions or restraints; to lie heavily upon