Today we were fighting over the last slice of pizza and needed the following phrase:
“почему не даешь мне пиццу?!”
“Why aren’t you giving me any pizza?”
“Mikset anna mulle pizzaa!?”
Words are mostly old and familiar like почему Timo Koola · 3x365 Russian Words, Day 26 from yesterday
даешь дать - to give - antaa
мне dative form of я - I - minulle / mulle (colloquial)
пиццу accusative form of пицца - pizza - pizza (another easy Finnish word for your vocabulary)
We might need to have a look at Noun declination. This Study Russian Online: Russian Cases article covers the basics well - in short dative is a form for indirect object and accusative is a form of direct object.
In Finnish dative function is taken over by Allative case