A combustor (1200, 4000) for a gas turbine comprising: a combustion chamber (1210, 4100); and a fuel nozzle assembly (1220, 2000, 3000, 4200) mounted in the combustion chamber (1210, 4100) and connected to an end plate (1213, 4130) of the combustion chamber (1210, 4100), the fuel nozzle assembly (1220, 2000, 3000, 4200) including: an inner fuel nozzle (2100, 3100, 4210); a plurality of outer fuel nozzles (2200, 3200, 4220a, 4220b) disposed radially around the inner fuel nozzle (2100, 3100, 4210), each outer fuel nozzle (2200, 3200, 4220a, 4220b) including a central body (2210, 3210, 4221a, 4221b) for fuel injection and a shroud (2220, 3220, 4222a, 4222b) spaced apart from and surrounding the central body (2210, 3210, 4221a, 4221b), the shrouds (2220, 3220, 4222a, 4222b) of the outer fuel nozzles (2200, 3200, 4220a, 4220b) forming an outer periphery of the fuel nozzle assembly (1220, 2000, 3000, 4200) by a series of outwardly facing edges of the shrouds (2220, 3220, 4222a, 4222b), and wherein each of the outer fuel nozzles (2200, 3200, 4220a, 4220b) comprises an inlet for air formed at one end of the shroud (2220, 3220, 4222a, 4222b) and a fuel nozzle rim formed at the inlet of the shroud (2220, 3220, 4222a, 4222b), wherein the fuel nozzle rim extends from the shroud (2220, 3220, 4222a, 4222b) with the same or increased thickness as that of the shroud (2220, 3220, 4222a, 4222b) and follows an outwardly extending curve having a uniform curvature radius (Ra, Rb); and wherein the fuel nozzle rims collectively define a peripheral rim formed and disposed at the outer periphery of the fuel nozzle assembly (1220, 2000, 3000, 4200); characterized in that the fuel nozzle rim (2230, 3230) of at least one of the plurality of outer fuel nozzles (2200, 3200, 4220a, 4220b) is formed at a portion of the inlet of the shroud (2220, 3220, 4222a, 4222b) and forms an angle (θ) ranging from 90 degrees to 240 degrees around a center of the outer fuel nozzle (2200, 3200, 4220a, 4220b) and is included in the peripheral rim. a combustion chamber (1210, 4100); and a fuel nozzle assembly (1220, 2000, 3000, 4200) mounted in the combustion chamber (1210, 4100) and connected to an end plate (1213, 4130) of the combustion chamber (1210, 4100), the fuel nozzle assembly (1220, 2000, 3000, 4200) including: an inner fuel nozzle (2100, 3100, 4210); a plurality of outer fuel nozzles (2200, 3200, 4220a, 4220b) disposed radially around the inner fuel nozzle (2100, 3100, 4210), each outer fuel nozzle (2200, 3200, 4220a, 4220b) including a central body (2210, 3210, 4221a, 4221b) for fuel injection and a shroud (2220, 3220, 4222a, 4222b) spaced apart from and surrounding the central body (2210, 3210, 4221a, 4221b), the shrouds (2220, 3220, 4222a, 4222b) of the outer fuel nozzles (2200, 3200, 4220a, 4220b) forming an outer periphery of the fuel nozzle assembly (1220, 2000, 3000, 4200) by a series of outwardly facing edges of the shrouds (2220, 3220, 4222a, 4222b), and wherein each of the outer fuel nozzles (2200, 3200, 4220a, 4220b) comprises an inlet for air formed at one end of the shroud (2220, 3220, 4222a, 4222b) and a fuel nozzle rim formed at the inlet of the shroud (2220, 3220, 4222a, 4222b), wherein the fuel nozzle rim extends from the shroud (2220, 3220, 4222a, 4222b) with the same or increased thickness as that of the shroud (2220, 3220, 4222a, 4222b) and follows an outwardly extending curve having a uniform curvature radius (Ra, Rb); and wherein the fuel nozzle rims collectively define a peripheral rim formed and disposed at the outer periphery of the fuel nozzle assembly (1220, 2000, 3000, 4200); characterized in that the fuel nozzle rim (2230, 3230) of at least one of the plurality of outer fuel nozzles (2200, 3200, 4220a, 4220b) is formed at a portion of the inlet of the shroud (2220, 3220, 4222a, 4222b) and forms an angle (θ) ranging from 90 degrees to 240 degrees around a center of the outer fuel nozzle (2200, 3200, 4220a, 4220b) and is included in the peripheral rim. an inner fuel nozzle (2100, 3100, 4210); a plurality of outer fuel nozzles (2200, 3200, 4220a, 4220b) disposed radially around the inner fuel nozzle (2100, 3100, 4210), each outer fuel nozzle (2200, 3200, 4220a, 4220b) including a central body (2210, 3210, 4221a, 4221b) for fuel injection and a shroud (2220, 3220, 4222a, 4222b) spaced apart from and surrounding the central body (2210, 3210, 4221a, 4221b), the shrouds (2220, 3220, 4222a, 4222b) of the outer fuel nozzles (2200, 3200, 4220a, 4220b) forming an outer periphery of the fuel nozzle assembly (1220, 2000, 3000, 4200) by a series of outwardly facing edges of the shrouds (2220, 3220, 4222a, 4222b), and wherein each of the outer fuel nozzles (2200, 3200, 4220a, 4220b) comprises an inlet for air formed at one end of the shroud (2220, 3220, 4222a, 4222b) and a fuel nozzle rim formed at the inlet of the shroud (2220, 3220, 4222a, 4222b), wherein the fuel nozzle rim extends from the shroud (2220, 3220, 4222a, 4222b) with the same or increased thickness as that of the shroud (2220, 3220, 4222a, 4222b) and follows an outwardly extending curve having a uniform curvature radius (Ra, Rb); and wherein the fuel nozzle rims collectively define a peripheral rim formed and disposed at the outer periphery of the fuel nozzle assembly (1220, 2000, 3000, 4200); characterized in that the fuel nozzle rim (2230, 3230) of at least one of the plurality of outer fuel nozzles (2200, 3200, 4220a, 4220b) is formed at a portion of the inlet of the shroud (2220, 3220, 4222a, 4222b) and forms an angle (θ) ranging from 90 degrees to 240 degrees around a center of the outer fuel nozzle (2200, 3200, 4220a, 4220b) and is included in the peripheral rim.