  Considering a strong field limit, we investigate the retrolensing phenomenon
in the vicinity of a Janis-Newman-Winicour (JNW) naked singularity embedded in
a scalar field. We assume that the light rays from a nearby source are
reflected by the photon sphere of the naked singularity, acting as a lens, to
create a pair of images. The analytic expressions of the lensing coefficients
$\bar{a}$ and $\bar{b}$ are obtained, which are scalar dependent and discordant
with \cite{Bozza:2002b}. Moreover, considering the powerful supermassive black
hole candidates Sgr A* and M87*, we examined the influence of the scalar field
on the apparent brightness and angular positions of the parity images. Our
results are highlighted in correspondence with a non-scalar field gravity,
specifically the Schwarzschild gravity. We have found that the brightness
increases in the presence of the scalar field, while, the lensing coefficients
$\bar{a}$, $\bar{b}$, the angular positions and the angular separation of the
relativistic images experience a reverse effect.
