The Tory accused peers of simply wanting a “Brexit veto” as they attempt to block the will of the British people.
Peers voted by a majority of 98 to demand a vote in both houses of Parliament on the final Brexit deal when the UK severs ties with Brussels.
Mr Raab however reiterated that the Government would reject the amendments made by the House of Lords.
Speaking on Sky News, he said: “Nothing’s ever entirely simple with Brexit, but I think the truth is, we have been over this terrain before and the elected MP’s in the House of Commons, voted for a clean Brexit Bill by five to one.
Dominic Raab criticised House of Lords peers for wanting a 'Brexit veto'
“I suspect again my colleagues, will obviously heed the advice from the House of Lords, but will take the same view.
“There are no real new arguments that have come up and I think there is a sneaking suspicion that certainly on the final vote, that actually some of the Lords really want to give themselves a veto over Brexit and the will of the British people.
“Not only is that wrong as a matter of democratic principle, but actually if that was possible we would go into these negotiations with the EU knowing that if they give us the very worst deal, that we will just change our mind.
“That’s crazy diplomacy as well as lousy democracy.”
The Prime Minister revealed that there would already be a vote on the final Brexit deal, however Lords have requested an amendment to be added to the Bill.
All the pictures from Brexit Bill Tuesday Tue, March 7, 2017
Theresa May is facing a second defeat on her Brexit bill Tuesday as the House of Lords votes on another change which would give parliament the final say on leaving the EU
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Archbishop of Canterbury, Justin Welby, speaks in the House of Lords Chamber at the start of the third day of The European Union (Notification of Withdrawal) Bill
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That’s crazy diplomacy as well as lousy democracy
The Government was defeated on it’s Article 50 Bill last week as peers attempted to protect three million EU nationals living in Britain.
Parliament will discuss the amendments made by the House of Lords next week, however the Tory MP urged peers to support the Prime Minister.
He added: “I think what you do is you go into a negotiation and take the Prime Minister at her word.
“She made it very clear that we are going in fighting for the very best deal, a very ambitious deal on trade.
“We need to give the Government the most flexibility… to make sure that she has got the latitude to go in and yes have the flexibility to make the compromises, but not to be constantly looking over her shoulder thinking, actually am I going to get sued when I come back with the deal to the UK, that’s crazy.”
The Conservative politician finished by drumming up support for Theresa May before he attacked the House of Lords one final time.
He said: “What we need to do is trust this Prime Minister, there will be a vote on the final deal.
“What unelected peers in the House of Lords can’t expect to do is either frustrate the democratic will of the people or give the EU the very carrot to try to stop us from leaving.”