Krishana,
If your names are in colums and set up like A1 of sheet one and A1 of sheet 2 you can use something like this to compair columns and rows, but if they are not lined up and scattered all over the sheet it will not work.
=IF(MID(Sheet1!A1,6,5)=(MID(Sheet2!A1,1,5)),1,0)
This assumes that sheet 1 name will always have SHRI. before the name and looks at the 6th char and compairs 5 chars to sheet 2 to return a 1, for true and a 0 for false. you can change the 1 & the 0 to what ever you want.
Now if you dont want to create a third sheet and are looking for more of a way to highlight duplicate names you might look into conditional formatting.
If you can upload an example of your sheet.
Don