  It is shown in the article that according to the Relativistic Theory of
Gravitation the gravitational field providing slowing down of the time rate
nevertheless stops itself this slowing down in strong fields. So a physical
tendency of this field to self-restriction of the gravitational potential is
demonstrated. This property of the field leads to a stopping of the collapse of
massive bodies and to the cyclic evolution of the homogeneous and isotropic
Universe.
