  Unpolarized 1.047 GeV proton inelastic scatterings from Ni isotopes,
$^{62}$Ni and $^{64}$Ni are analyzed phenomenologically employing an optical
potential model and the first order collective model in the relativistic Dirac
coupled channel formalism. The Dirac equations are reduced to the
Schr\"{o}dinger-like second-order differential equations and the effective
central and spin-orbit optical potentials are analyzed by considering mass
number dependence. The multistep excitation via $2^+$ state is found to be
important for the $4^+$ state excitation in the ground state rotational band at
the proton inelastic scatterings from the Ni isotopes. The calculated
deformation parameters for the 2$^+$, the 4$^+$ states of the ground state
rotational band and the first 3$^-$ state are found to agree pretty well with
those obtained in the nonrelativistic calculations.
