In muqābalah, not every individual word in one side needs a lexical antonym on the other. The central semantic units form the contrast, while some connective words only establish sentence structure.
In the example from Sūrat al-Layl, repeated particles and connective expressions bind the two descriptions. The principal opposing relations are giving/withholding and the other substantive pairs.
One should first identify the core meanings in each group, then match their corresponding members. Inventing antonyms for every grammatical particle is unnecessary.