  It is shown that the application of the Nikiforov-Uvarov method by Ikhdair
for solving the Dirac equation with the radial Rosen-Morse potential plus the
spin-orbit centrifugal term is inadequate because the required conditions are
not satisfied. The energy spectra given are incorrect and the wave functions
are not physically acceptable. We clarify the problem and prove that the spinor
wave functions are expressed in terms of the generalized hypergeometric
functions. The energy eigenvalues for the bound states are given by the
solution of a transcendental equation involving the hypergeometric function.
