Lallana spoke highly of 32-year old striker Lambert, who has scored two goals in four internationals, while also praising the other Southampton aces after they were picked by Roy Hodgson for the midweek fixture.
"Seeing Rickie being involved gave everyone an extra 10 per cent of belief," he said.
"We have had a good season at Southampton, been performing well on a consistent basis and we have all been helping each other.
"It is brilliant, it proves how far the club has come and to have four lads representing the country this week is fantastic."
The Saints currently sit ninth on the Premier League table with 39 points from 28 matches.
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