find . -type f -execexecdir echo START{}END ";"
START./--$`\! *@
\"'
/--$`\! *@
\"'
END
In which cases to you fail with find?
find . -type f -execexecdir md5sum {} ";"
\d41d8cd98f00b204e9800998ecf8427e ./--$`\\! *@
\\"' \n/--$`\\! *@
\\"' \n
(changed from -exec to -execdir after useful hint).