We establish properly efficient necessary and sufficient optimality conditions for multiobjective fractional programming involving nonsmooth generalized ( ℱ , b , ϕ , ρ , θ ) -univex functions. Utilizing the necessary optimality conditions, we formulate the parametric dual model and establish some duality results in the framework of generalized ( ℱ , b , ϕ , ρ , θ ) -univex functions.