A Tory Remain rebel has warned Theresa May that "if she f**ks us, she's f**ked, ' after Conservative MPs were given assurances by the prime minister that a compromise Brexit amendment to the 'meaningful vote" will be upheld.
The Government made a series of late concessions to backbench MPs who were minded to rebel behind closed doors, meaning the true nature of what has been agreed is not yet clear.
He called for Brexit to be delayed, and for the public to get a second referendum on the terms of any exit deal.
Moments later, MPs voted by 324 to 298 to reject a House of Lords amendment to the EU Withdrawal Bill which would have given Parliament the power to tell the PM to go back and renegotiate the Brexit deal she secures from Brussels.
Mr Grieve ended up voting with the Government - against his own amendment - and said he believes MPs will be offered a meaningful vote anyway.
In the end Lee abstained, saying he trusted the premier to give parliament a "voice" in a compromise motion due to be presented when the bill returns to the Lords on Monday. "I can not support the government's decision to oppose this amendment because doing so breaches such fundamental principles of human rights and parliamentary sovereignty", he said.
Buckland indicated the government would look into the possibility of adopting Grieve's push for ministers to secure parliamentary approval for their Brexit plans if they fail to negotiate a deal with the EU.
Lee said "the people, economy and culture of my constituency will be affected negatively" by Britain's European Union departure, and it is "irresponsible to proceed as we are".
"The Government's amendment today provides for a meaningful vote".
A Downing Street source said: "We will get a good Brexit deal that works for everybody in the UK".
Anna Soubry, a pro-EU Conservative MP, said she knew of one legislator who would not vote with their conscience because of "threats to their personal safety" and that of staff and family.
One of the leading Tory rebels has told the BBC "the government has bent not broken" but it leaves the "fight for another day".
British minister resigned unexpectedly Tuesday citing the government's approach to Brexit, hours ahead of a showdown in Parliament over whether lawmakers can wrest some control from the government of the deal to leave the European Union.
Some Europhile Tories may hold back from rebelling to avoid destabilising her and risking handing the leadership to a hardline Brexiteer.
He confirmed that ministers will seek to overturn 14 amendments which he said would undermine the goal of the Bill and fail to respect the result of the 2016 referendum.
"She said that anything which undermines the government at home would make the negotiations with the European Union more hard". Its Lords were instrumental in bringing about some of the amendments that have been sent back to the Commons. Brexit-backers objected as it would have all but removed the no-deal nuclear option from negotiators' arsenal.
However, despite backing down, pro-Remain Tories signalled they would not be easily consoled by a compromise offered by ministers.
Earlier, May appeared to have also stemmed a rebellion over her commitment to leaving the EU's customs union which will transform Britain's trading relationships for decades to come.