Ukraine’s Parliament is set to vote on Thursday on legislation to restore the powers of the country’s anticorruption agencies. The vote would come one week after a move by President Volodymyr Zelensky to undermine the independence of the agencies set off a ferocious domestic and international backlash.

Mr. Zelensky signed a bill on July 22 that would neuter the two agencies, which had filed charges against more than 10 lawmakers from his party and against three government ministers, including a deputy prime minister. In response, protesters took to the streets in cities across Ukraine in the first antigovernment demonstrations since the full-scale Russian invasion in 2022.

With his move threatening to damage national unity and critical international support in the war effort, Mr. Zelensky soon backtracked and proposed the new legislation reinstating the agencies’ authority.

European leaders have pressured Mr. Zelensky about the agencies, issuing statements noting the importance of the fight against corruption in Ukraine. The European Union announced last Friday that it would withhold 1.5 billion euros, or $1.7 billion, from a 4.5-billion euro fund, the disbursement of which is dependent on achieving good governance standards.

Ukrainians who have come out in protest said they hoped the new law would pass as it was drafted. They said they worried that if the vote failed, demonstrations could spiral out of control.

The two agencies at the heart of the controversy — the National Anti-Corruption Bureau of Ukraine and the Specialized Anticorruption Prosecutor’s Office — were created a decade ago with strong Western backing. They are widely seen as essential to combating the graft and grifting that have long plagued the country.