BAGHDAD, IRAQ, JAN. 11 -- Iraqi President Saddam Hussein today gave a blow-by-blow account of how he believes a war would play out on the Kuwaiti battlefield and indicated he is convinced Iraq can prevail against U.S.-led multinational forces in Saudi Arabia.

Speaking on the eve of a last-ditch peace mission here by U.N. Secretary General Javier Perez de Cuellar, Saddam offered his assessment of air and ground forces amassed against Iraqi troops and said any battle would boil down to Iraq's war-hardened veterans against an "infidel" force of rookies.

"We have prepared all possible means to confront the aggressors," Saddam said in a speech to Moslem clerics at the close of an international Islamic conference here. "The Americans will come here to perform some acrobatics like in the Rambo movies, but wherever they land, they will find masses who will confront them."

"We are people who do not speak from military manuals but from eight years of combat experience," he added, referring to Iraq's 1980-88 war with Iran. "All these sophisticated weapons will be under the test on the battlefield, and they will see how their weapons will be rendered useless."

U.S. warplanes and helicopters would be unsuccessful in rooting out Iraqi troops "inside their reinforced bunkers" in the desert, the Iraqi president said, warning that such aircraft would slowly degrade under harsh desert conditions.

"They have guided missiles. . . . We know that all weapons fired by remote control must be controlled by airplanes within five kilometers {about three miles}," Saddam said, adding that Iraq has the ability to jam missile-guiding radio signals and to shoot down any aircraft penetrating Iraqi or Kuwaiti airspace.

Any communications-jamming techniques employed by U.S. forces, he said, would be foiled by Iraqi preparations that would enable troops "to overcome this for as long as a year."

Eventually, he said, "they will have to rely on soldiers carrying rifles and hand grenades." At that point, the battle would pit experienced Iraqi troops against untested multinational forces.

"We fight for the sake of dignity. We fight for the sake of our Lord. . . . To think that the infidel can fight with such commitment -- this will never happen," he said. "The showdown today is not a showdown for land . . . but a showdown between the infidels and the true believers."

Despite Saddam's tone, there was little indication of war preparations in the Iraqi capital. At many gasoline stations, there was less evidence of the panic buying and fuel hoarding that had been evident earlier this week, when motorists lined up for blocks and waited for hours to buy gas.

Today was the Moslem Sabbath and traffic was lighter than normal, but motorists attributed the lack of lines to an appeal on government-controlled television Thursday night that asked: "Why are you lining up to buy gas? There is plenty for everyone."

Earlier today, former Nicaraguan president Daniel Ortega arrived in Baghdad and shook hands with Nation of Islam leader Louis Farrakhan, who was attending the Islamic conference. Ortega criticized the United States for "overreaction" to Iraq's Aug. 2 invasion of Kuwait. At a press conference, Farrakhan said Saddam "seems very resolute and fixed that he will not leave Kuwait and is prepared for war."

Farrakhan said neither Bush nor Saddam seems willing to back down. "The two men seem to be on a collision course." He said he had introduced a resolution at the conference urging both sides to "step back" in hopes that the world Moslem community could arrive at a peaceful solution to the crisis. He offered no specific plan for a solution.