1:21 PM PT -- 3/1 -- Maryna has now teamed up with UNICEF ... and they're selling "Stand with Ukraine"merch to benefit children impacted by the war.
In fact, Moroz will be wearing one of the pieces as she makes her way to the Octagon at UFC 272 Saturday night.
Proceeds will go towards UNICEF's efforts in Ukraine.
Ukrainian UFC fighter Maryna Moroz -- who is fighting in 5 days -- has a message for Russian President Vladimir Putin as his troops invaded her homeland, killing soldiers and innocent people ... "F**k you, bitch! I love my country. Don't touch Ukraine!"
TMZ Sports talked to 30-year-old Moroz less than a week before she's scheduled to fight Mariya Agapova, an MMA fighter from Kazakhstan, as Ukraine is mercilessly attacked by Putin's military.
Maryna was born in Vilnohirsk, Ukraine in September 1991 ... almost exactly the time Ukraine gained its independence as the Soviet Union dissolved.