He's doing an E barre chord based from the A string, switches briefly to an Esus4 chord, then back to E. Something like this:
-------------------------------
-9----------9--------10--9--
-9----------9---------9---9--
-9----------9---------9---9--
-7----------7---------7---7--
-----0-0-0-----0--0---------
"The more generous you are with your music, the more it comes back to you." -- Dan Lampinski
http://www.queenlive.ca