OK let's try it in Finnish! Finland & Russia are neighboring countries and Finland used to be a autonomic part of the Russian empire from 1809 until 1917, so Nicholas II was OUR last tsar as well.. Our languages are not related though, and we use different name day calendar. Some of the typical saint's names (like Maria, Anna) we share but the spelling can vary.
Nicholas = Nikolai (Niki, Niko, Nikke)
Alexandra = Aleksandra (Sandra, Santra, Sanni?)
Olga = Olga, used to be a common girl's name here 100 years ago, but not anymore, no special nicknames
Tatiana = Tatjana (Tanja is quite popular name even nowadays, Taina, Jaana?)
Maria = Maria, very popular especially for second christian name (Marja, Maija and many other variations)
Anastasia = Anastasia (not used very much in Finland, but I remember one old lady called Nasti)
Alexei = Aleksi, Aleksis (Aleksi is one of the most popular boy's name here nowadays)
Alexander = Aleksanteri (Aleks, Ales, Santeri, Santtu)
Xenia = Ksenia (Senja)
Michael, Mihail = Mikael (Mikko)
Georgi, Yuri = Yrjö (Ykä)
And many more...