  Quasi-stationary states of the quantum system in the driving resonant field
are considered without rotating wave approximation. Conditions under which the
spontaneous emission could be suppressed in this system are investigated in the
special case when the frequency of the driving field is essentially less than
the frequency of spontaneous emission. It is shown that the characteristic
parameters of the effect are substantially changed in comparison with the
results corresponding to RWA. The real physical system for which the considered
effects could be observed is described.
