Hi:
My question is "how" are you trying to accomplish the protection?
I don't think it can be done with PROC EXPORT or the Excel LIBNAME engine or with ODS CSV, ODS HTML or ODS TAGSETS.EXCELXP.
Possibly with DDE or ODBC or OLE-DB, you might be able to send the right commands from SAS to Excel to protect the cells. But the commands you would send would be Excel commands.
If you are using the SAS Enterprise Intelligence Platform and the SAS Add-in to Microsoft Office, there is a way, under Options, to protect the results of a Stored Process, but since you posted your question in the ODS forum, I suspect you are not using the Platform.
cynthia