  In the eikonal regime, we analytically calculate quasinormal resonance
frequencies for massless scalar perturbations of the higher-dimensional
Reissner--Nordstr\"{o}m (RN) black holes. Remarkably, we find that the
higher-dimensional RN black holes coupled with the massless scalar fields have
the fastest relaxation rates in the Schwarzschild limit, this is qualitatively
different from the four-dimensional case where the black hole with
non-vanishing charge has the fastest relaxation rate.
