Saints boss says that he will rest a few players against the Hoops but stresses that he wants to remain in the competition despite busy fixture list
"We want to win this tie even though we are facing into a really busy period for us," Buckley told the Irish Daily Star.
He added: "There are only three domestic competitions you can win and the EA Sports Cup is one of them so we will be going all out to reach the semi-finals.
"We will rotate a few players as I am sure [Shamrock] Rovers will as we both have large squads.
"After the break, we are playing weekend, mid-week and then the weekend again for the next few weeks," continued the former Ireland international. "And that will continue if we get past IBV in the Europa League, which will be extremely tough."
He added: "But I have found that if you plan your build up to these games properly and then the recovery after them that you can do well.
"It is also a big help if you don't pick up many injuries."
With the fixture list expected to be packed with games for the Inchicore side, including crucial Europa League ties, Buckley reminded his players of the importance of enjoying their football while also maintaining their work ethic.
"I said to the players last week that we are entering a hugely challenging four months," said the 52-year-old. "But I told them that they should enjoy it and also work hard."
He continued: "There are no easy games in European football as St Pat's found out when they played IBV over there [in Iceland] last year, losing 1-0. It could be a tricky little tie for us.
"What we have to do now is get as much information as we can on them, find out if they have the same squad as last year and what way they have been playing this year," concluded Buckley.
St Patrick's Athletic take on Shamrock Rovers in the EA Sports Cup quarter final at Richmond Park tonight, Tuesday June 26. Kick off 19:45 (BST).