A turbine assembly, comprising: a stator vane support, comprising: an inner diameter surface opposite an outer diameter surface; an anti-rotation lug defining a protrusion extending from the inner diameter surface, wherein the anti-rotation lug comprises a first surface opposite a second surface; a first recess defining a first void on the inner diameter surface proximate the first surface of the anti-rotation lug, the first recess having a first inner surface; and a second recess defining a second void on the inner diameter surface proximate the second surface of the anti-rotation lug, the second recess having a second inner surface, wherein at least one of the first inner surface of the first recess or the second inner surface of the second recess comprises a hemispherical shape relative to the inner diameter surface; and a plurality of stator vanes each having an anti-rotation end configured to interface with the stator vane support, wherein each anti-rotation end comprises a first protrusion and a second protrusion extending radially from the anti-rotation end towards the vane support, wherein the first protrusion and the second protrusion define an anti-rotation void, wherein the anti-rotation lug is configured to interface with the anti-rotation end, and wherein the anti-rotation lug is configured to interface with the anti-rotation void to at least partially limit rotation of the stator vane relative to the vane support. a stator vane support, comprising: an inner diameter surface opposite an outer diameter surface; an anti-rotation lug defining a protrusion extending from the inner diameter surface, wherein the anti-rotation lug comprises a first surface opposite a second surface; a first recess defining a first void on the inner diameter surface proximate the first surface of the anti-rotation lug, the first recess having a first inner surface; and a second recess defining a second void on the inner diameter surface proximate the second surface of the anti-rotation lug, the second recess having a second inner surface, wherein at least one of the first inner surface of the first recess or the second inner surface of the second recess comprises a hemispherical shape relative to the inner diameter surface; and an inner diameter surface opposite an outer diameter surface; an anti-rotation lug defining a protrusion extending from the inner diameter surface, wherein the anti-rotation lug comprises a first surface opposite a second surface; a first recess defining a first void on the inner diameter surface proximate the first surface of the anti-rotation lug, the first recess having a first inner surface; and a second recess defining a second void on the inner diameter surface proximate the second surface of the anti-rotation lug, the second recess having a second inner surface, wherein at least one of the first inner surface of the first recess or the second inner surface of the second recess comprises a hemispherical shape relative to the inner diameter surface; and a plurality of stator vanes each having an anti-rotation end configured to interface with the stator vane support, wherein each anti-rotation end comprises a first protrusion and a second protrusion extending radially from the anti-rotation end towards the vane support, wherein the first protrusion and the second protrusion define an anti-rotation void, wherein the anti-rotation lug is configured to interface with the anti-rotation end, and wherein the anti-rotation lug is configured to interface with the anti-rotation void to at least partially limit rotation of the stator vane relative to the vane support.