Many faces on that day shall be cast down.
Faces on that day will be shamed
On that Day faces shall be humbled
Faces on that day will be downcast
Faces/fronts (on) that day (are) humble/submissive
In that day, some faces will be downward of shame
Many a face will be disgraced on that day
Some faces on that day will be downcast
Many faces on that Day will be humiliated and degraded
Some persons shall be downcast and humble that day
Some faces, that Day, will be humiliated (in the Hell-fire, i.e. the faces of all disbelievers, Jews and Christians, etc.)