Australian Ukrainian community praying for peace

Ukrainians in Australia are praying for peace in their home country a year on from Russia's full-scale invasion.

The Ukrainian national anthem rang out over Melbourne on Friday evening as the community gathered at Federation Square for a vigil to mark the anniversary.

Olga Diacheko's family was back in Ukraine, her home country, as she attended the vigil. She waited every day to hear bad news, she said.

"My girls were born in Australia but it's hard for them to understand because they speak Russian. They can't understand why they speak Russian but Russia attacked Ukraine," Ms Diacheko told AAP.

"They keep asking, 'Is the war over?'. It's very hard to live every day not knowing what is going to come tomorrow."

Melbourne local Cathy Kaminnyj has Ukrainian family members fighting on the front line.

"It's good that we're standing strong and still fighting 12 months on, but we shouldn't be in this predicament," she said.

Australian events follow similar tributes by Ukrainians and their allies around the world on the first anniversary of the attack, which has become the worst conflict in Europe since World War II.

Ahead of the vigil, which was attended by politicians including Labor minister Bill Shorten and Victorian Opposition Leader John Pesutto, parishioners gathered for a service in the Ukrainian Catholic Church at North Melbourne.

"There is no liberal or labor ... there is only blue and yellow", "Mr Pesutto said.

It was important for people to have something spiritual to remember the day by, Association of Ukrainians in Victoria board chair Tatiana Zachariak said.

"The purpose isn't just on our Ukrainian community today, it's also about saying thank you to Australia and the Australian government for the support they've given to Ukraine and the people who've had to flee to Australia," she said.

"We also want to pass on the message that this isn't anything new in some ways. Russia has been attacking Ukraine for nearly 400 years."

The community did not want people to get Ukrainian fatigue and instead wanted them to remember a sovereign country had been attacked and was fighting for democracy, Ms Zachariak said.

Melbourne lit up in blue and yellow on Friday night in support of Ukraine, with Melbourne Town Hall, Federation Square, Flinders Street Station and the National Gallery of Victoria among the buildings that took on the country's national colours.

In Tasmania, Hobart's Tasman Bridge was also lit in blue and yellow to mark last year's February 24 invasion.

At Aristocrat Leisure's annual general meeting in Sydney on Friday, chairman Neil Chatfield took a moment to pause and acknowledge the anniversary.

"This will be a day of sombre reflection for many people, and indeed people around the world," he said.

The Australian electronic gaming giant had about 1000 staff working in Ukraine at its Pixel United mobile gaming subsidiary when the war began, three-quarters of whom have been relocated to safer locations either within the country or abroad.

Aristocrat set up a team in Poland to assist with transport, visas and housing assistance for the relocated staff, as well as stopped offering its mobile games within Russia, and set up four new global offices to accommodate people relocated from Ukraine.

Hundreds of members of Sydney's Ukrainian community and their supporters held a vigil outside St Mary's Cathedral on Thursday evening.