  We construct a self-consistent relativistic Newtonian analogue corresponding
to gravitational static spherical symmetric spacetime geometries, staring
directly from a generalized scalar relativistic gravitational action in
Newtonian framework, which gives geodesic equations of motion identical to
those of the parent metric. Consequently, the derived velocity-dependent
relativistic scalar potential, which is a relativistic generalization of
Newtonian gravitational potential, exactly reproduces the relativistic
gravitational features corresponding to any static spherical symmetric
spacetime geometry in its entirety, including all the experimentally tested
gravitational effects in the weak field up to the present. This relativistic
analogous potential is expected to be quite useful in studying wide range of
astrophysical phenomena, especially in strong field gravity.
