Abu Dhabi's share index .FTFADGI declined 0.7%, dragged down by a 2.2% fall in UAE's largest lender First Abu Dhabi Bank FAB.AD. By Shamsuddin Mohd Jan 11 (Reuters) - Gulf stock markets fell on Wednesday, with banking shares taking the biggest hit across the markets, as investors eagerly await Thursday's U.S. inflation data that is likely to shape the size of the Fed's next interest rate hike. QNB reported after market close on Wednesday a 9% rise in annual after adjusting for hyperinflation related to its business in Turkey.