"left in disbelief" is correct and usable in written English.
You can use it when you want to describe someone's shocked or astonished reaction to something. For example: After hearing the news, the crowd was left in disbelief.
The Capitals were left in disbelief.
However, upon further investigation, it emerged that the hoax originally stemmed from fans of Paul Walker, left in disbelief after he was killed in a road accident.
A builder has been left in disbelief after claiming a fellow passenger ordered him to move from his seat because he thought he had a better job.
Hayley Williamson, a Cape Cod resident and former lifeguard who was on the beach at the time, was left in disbelief.
Germany's players and 26,067 fans were left in disbelief in Wolfsburg, Germany, as Japan advanced to Wednesday's semifinals to face Sweden or Australia, who will meet in a quarterfinal Sunday.
An Irish fishing crew from County Kerry has been left in "disbelief" after they landed their second extremely rare giant squid in a matter of months.
One after another on Tuesday, shoppers drove through what was, until last weekend, the parking lot of Bongiorno's, leaving in disbelief when told the store was closed and would be reopened soon as a Stop & Shop supermarket.
It is those who have more direct dealings with the Trump Organisation that are left in shocked disbelief.
Though I had only seconds to grab a more thorough glance, I was left in horrid disbelief that the stacked items in his cart were his--not purchased items, but his soiled life's possessions.
As news of Donald Trump's victory reached Marrakech on Wednesday, the many thousands of diplomats, activists, youth and business groups gathered in the city for the UN's annual climate conference were left in shock and disbelief that the US could elect a climate-change denier as president.
A Seattle man said he was left in "shock and disbelief" after being on the receiving end of a homophobic tirade while visiting a local nail salon.
