A combustor , comprising: a casing ; an end cap within and circumferentially surrounded by the casing , the end cap having an annular cap shield that extends axially between an upstream surface and a downstream surface , a first and a second barrier which extend radially inside the cap shield , a first fuel plenum defined within the cap shield between the upstream surface and the first barrier and a second fuel plenum defined within the cap shield between the first barrier and the second barrier , a plurality of tubes providing fluid communication through the end cap and extending through the upstream surface , the first fuel plenum , the first barrier , the second fuel plenum , the second barrier and the downstream surface , wherein the tubes comprise a first set of tubes which includes one or more fuel ports that provide fluid communication from the first fuel plenum into the first set of tubes and a second set of the tubes which includes one or more fuel ports that provide fluid communication from the second fuel plenum into the second set of tubes wherein an outer surface of the cap shield is radially spaced from an inner surface of the casing to define an annular passage therebetween for the flow of working fluid, an axially extending fuel conduit extending through the upstream surface into the first fuel plenum , and a second fuel conduit which extends radially through the casing , the annular passage , and the cap shield to provide fluid communication to the second fuel plenum ; and a plurality of airfoils extend radially through the annular passage from the inner surface of the casing to the outer surface of the cap shield and surround at least a portion of the second fuel conduit , wherein the plurality of airfoils reduce flow resistance of the working fluid flowing across the second fuel conduit in the annular passage . a casing ; an end cap within and circumferentially surrounded by the casing , the end cap having an annular cap shield that extends axially between an upstream surface and a downstream surface , a first and a second barrier which extend radially inside the cap shield , a first fuel plenum defined within the cap shield between the upstream surface and the first barrier and a second fuel plenum defined within the cap shield between the first barrier and the second barrier , a plurality of tubes providing fluid communication through the end cap and extending through the upstream surface , the first fuel plenum , the first barrier , the second fuel plenum , the second barrier and the downstream surface , wherein the tubes comprise a first set of tubes which includes one or more fuel ports that provide fluid communication from the first fuel plenum into the first set of tubes and a second set of the tubes which includes one or more fuel ports that provide fluid communication from the second fuel plenum into the second set of tubes wherein an outer surface of the cap shield is radially spaced from an inner surface of the casing to define an annular passage therebetween for the flow of working fluid, an axially extending fuel conduit extending through the upstream surface into the first fuel plenum , and a second fuel conduit which extends radially through the casing , the annular passage , and the cap shield to provide fluid communication to the second fuel plenum ; and a plurality of airfoils extend radially through the annular passage from the inner surface of the casing to the outer surface of the cap shield and surround at least a portion of the second fuel conduit , wherein the plurality of airfoils reduce flow resistance of the working fluid flowing across the second fuel conduit in the annular passage . <EOS>