Akademik

За чужой щекой зуб не болит
See Чужое горе не болит (Ч)
Cf: Another's cares will not rob you of sleep (Am.). It is easy to bear the misfortunes of others (Br.). We can always bear our neighbors' misfortunes (Am.)

Русско-английский словарь пословиц и поговорок. . 2013.