  Significant progress has been made in designing magnetic fields that provide
excellent confinement of the guiding enter trajectories of alpha particles
using quasisymmetry (QS). Given the reduction in this transport channel, we
assess the impact of resonant Alfv\'{e}n eigenmodes (AEs) on the guiding center
motion. The AE amplitudes are chosen to be consistent with experimental
measurements and large-scale simulations. We evaluate the drift resonance
condition, phase-space island width, and island overlap criterion for
quasisymmetric configurations. Kinetic Poincar\'{e} plots elucidate features of
the transport, including stiff transport above a critical perturbation
amplitude. Our analysis highlights key departures from the AE-driven transport
in tokamaks, such as the avoidance of phase-space island overlap in
quasihelical configurations and the enhanced transport due to wide phase-space
islands in low magnetic shear configurations. In configurations that are closer
to QS, with QS deviations $\delta B/B_0 \lesssim 10^{-3}$, the transport is
primarily driven by the AE, while configurations that are further from QS,
$\delta B/B_0 \sim 10^{-2}$, experience significant transport due to the
QS-breaking fields in addition to the AE.
