Inverness had scored in their previous 25 games this season and last failed to find the net in a draw against Dunfermline in May, which secured their Clydesdale Bank Premier League status.
That prompted Caley boss Terry Butcher to claim on the eve of the game that a goalless draw would send "seismic shock waves" across the SPL.
That was, however, exactly the result as Saints were left to rue missed chances by Gregory Tade and Andrew Shinnie in the opening exchanges.
Lomas said: "I thought it was set up to be two attacking teams and it probably turned out to be a little bit of an anti-climax.
"Inverness had a couple (of chances) early and then I thought it became pretty even Stevens.
"In these tight games when you get your chances you have got to take them.
"Gregory had a chance, one-on-one with their goalkeeper. You could say he made a good save but when it's so tight you have got to take those opportunities when they come along.
"The plus side is we are the first team to stop Inverness scoring in a while so we'll take the positives."