The name Shura is a girl's name of Russian origin meaning "defending men". Shura and is often added to lists like International Variations of Alexandra and discussed in our forums with posts like "Hunt for our favourite boy names (Alphabet-wise)".
From the experts:
Shura is a unisex Russian nickname for Aleksandr or Aleksandra, themselves forms of Alexander. Less known in the English=speaking world than Sasha, it's also more assertive -- probably because of that "sure" sound.