I don't think anyone has tabbed it yet so I thought i'd give it a go. Enjoy
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--------------------------------------4---------------------------------
--------------------------------------4--------------------------------- x2
--7----5----3----2--------------then--2---------------------------------
----------------------5----7--------------------------------------------
Lead
[ Tab from: https://www.guitartabs.cc/tabs/c/christina_aguilera/fighter_tab.html ]
----7h8p7-------2h3p3--------------------------------------------------
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------------------------4h5p4------------------------------------------
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Chorus
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-2----4----5----7---10----9--------------------------------------------
-2----4----5----7---10----9--------------------------------------------
-0----2----3----5----8----7--------------------------------------------
