Complete fusion cross sections for ⁷Li+^144,152Sm reactions have been measured at energies around the Coulomb barrier by offline γ -counting technique. Measured cross sections for the above two reactions are found to be similar at energies well above the Coulomb barrier, however, at sub-barrier energies the cross sections for the ⁷Li+¹⁵²Sm system are much higher compared to the ⁷Li+¹⁴⁴Sm system, manifesting the effect of target deformation. Cross sections for the present reactions at above-barrier energies are found to be larger than previously measured reactions involving ⁶Li projectile with the same targets, possibly due to smaller breakup probability of ⁷Li than ⁶Li. Coupled-channels calculations show that the experimental fusion cross sections for both the systems are enhanced at sub barrier energies and suppressed at above-barrier energies compared to the respective one-dimensional barrier penetration model predictions. The calculations by different models show that the measured complete fusion cross sections at above-barrier energies are suppressed up to ∼25% compared to the theoretical predictions. It also reveals that a large part of the suppression could be due to inelastic and transfer coupling.