Your energy should be spent on fighting them, just as their energy is spent on fighting you, and on expelling them from the areas from which they have expelled you, as a law of equality in punishment.
Source, in full
Ibn Kathir, I, 527. Ibn Kathir, Tafsir Ibn Kathir (abridged) (Riyadh: Darussalam, 2000) quoted in The critical qur’an: explained from key islamic commentaries and contemporary historical research. (2021). . Bombardier Books. about Quran 2.191