A combustor comprising: an end cover ; at least one fuel nozzle extending from the end cover and at least partially surrounded by a combustion liner , the combustion liner extending from the at least one fuel nozzle toward an aft frame , wherein the combustion liner defines a combustion chamber having a primary combustion zone downstream from the at least one fuel nozzle and a secondary combustion zone downstream from the primary combustion zone ; an outer sleeve spaced apart from and surrounding the combustion liner such that an annulus is defined therebetween; and a fuel injection assembly , the fuel injection assembly comprising: a fuel injector extending through the outer sleeve , the annulus , and the combustion liner to the secondary combustion zone ; a fuel supply conduit positioned outside of the outer sleeve , the fuel supply conduit extending to the fuel injector ; and a shielding assembly coupled to the outer sleeve and at least partially surrounding the fuel supply conduit , wherein the shielding assembly includes a venturi nozzle having a circumferentially converging portion and a circumferentially diverging portion , characterized in that at least one fuel sweep opening is defined in the outer sleeve immediately forward of the venturi nozzle , and wherein the at least one fuel sweep opening is disposed within the shielding assembly . an end cover ; at least one fuel nozzle extending from the end cover and at least partially surrounded by a combustion liner , the combustion liner extending from the at least one fuel nozzle toward an aft frame , wherein the combustion liner defines a combustion chamber having a primary combustion zone downstream from the at least one fuel nozzle and a secondary combustion zone downstream from the primary combustion zone ; an outer sleeve spaced apart from and surrounding the combustion liner such that an annulus is defined therebetween; and a fuel injection assembly , the fuel injection assembly comprising: a fuel injector extending through the outer sleeve , the annulus , and the combustion liner to the secondary combustion zone ; a fuel supply conduit positioned outside of the outer sleeve , the fuel supply conduit extending to the fuel injector ; and a shielding assembly coupled to the outer sleeve and at least partially surrounding the fuel supply conduit , wherein the shielding assembly includes a venturi nozzle having a circumferentially converging portion and a circumferentially diverging portion , characterized in that at least one fuel sweep opening is defined in the outer sleeve immediately forward of the venturi nozzle , and wherein the at least one fuel sweep opening is disposed within the shielding assembly . a fuel injector extending through the outer sleeve , the annulus , and the combustion liner to the secondary combustion zone ; a fuel supply conduit positioned outside of the outer sleeve , the fuel supply conduit extending to the fuel injector ; and a shielding assembly coupled to the outer sleeve and at least partially surrounding the fuel supply conduit , wherein the shielding assembly includes a venturi nozzle having a circumferentially converging portion and a circumferentially diverging portion , characterized in that at least one fuel sweep opening is defined in the outer sleeve immediately forward of the venturi nozzle , and wherein the at least one fuel sweep opening is disposed within the shielding assembly . <EOS>