The Perth side's win over Inverness last week has put them right in the mix for a Europa League qualification slot, with the Highlanders, Lomas' team and Ross County now set for a three-way fight for third place. Just two points separate the three teams but Hoops boss Neil Lennon says he is ready to forgo SPL points in favour of keeping his men fresh for the William Hill Scottish Cup final with Hibernian on May 26, starting with Sunday's meeting against the Staggies.
Lomas, whose side face Dundee United on Saturday, told Press Association Sport: "I'll just look after my own house. It's hard enough managing one club. Neil is perfectly within his rights to do what he feels is best for Celtic Football Club."
He added: "We are just going to deal with our side of things. If we can get a result tomorrow, it will be a massive boost.
"Every game is a cup final for us now and for numerous reasons - for qualifying for Europe, for prize money, for re-signing boys. For the lads to be in the mix to qualify for Europe for the second season running is a huge achievement."
Another European jaunt would strengthen Lomas' hand when it comes to contract negotiations but the McDiarmid manager has acted early to sign up midfield duo Chris Millar and Liam Caddis on new deals.
Millar, who moved from Morton in 2008, has agreed a two-year extension, while 19-year-old prospect Caddis has been tied down for an extra 12 months.
"We want to get the ones signed up that we can," said Lomas. "Chris has been a good servant to the club and he's done a good job for us so we are delighted to get him signed up for two years.
"As for Liam, we're hoping he can make the breakthrough next season. He's been knocking on the door for quite a while but because we have been winning, he's found it hard to get in."