  We report a polarization-resolved Raman spectroscopy study of the orbital
dependence of the quasiparticles properties in the prototypical multi-band
Fermi liquid Sr\textsubscript{2}RuO\textsubscript{4}. We show that the
quasiparticle scattering rate displays $\omega^{2}$ dependence as expected for
a Fermi liquid. Besides, we observe a clear polarization-dependence in the
energy and temperature dependence of the quasiparticle scattering rate and
mass, with the $d_{xz/yz}$ orbital derived quasiparticles showing significantly
more robust Fermi liquid properties than the $d_{xy}$ orbital derived ones. The
observed orbital dichotomy of the quasiparticles is consistent with the picture
of Sr\textsubscript{2}RuO\textsubscript{4} as a Hund's metal. Our study
establishes Raman scattering as a powerful probe of Fermi liquid properties in
correlated metals.
