Madrid had won 3-0 in the first leg in Turin last week, when Ronaldo scored one of his two goals with an fantastic overhead kick.
While the changes resulted in more possession for the hosts, the Bernabeu remained on edge and the apprehension was borne out at the hour mark, as a Navas blunder set up Blaise Matuidi to level the aggregate score at 3-3.
Juve goalkeeper and captain Gianluigi Buffon angrily protested the decision before he was sent off for the first time of his storied career in the Champions League.
The injury time penalty ensured the tie ended with fitting drama, Ronaldo beating substitute keeper Szczesny from the spot after Buffon was sent off when his protests at the spot-kick became too heated for referee Oliver.
Real, Liverpool, Bayern Munich and Roma are through to the semi-finals of the tournament, with the draw therefor taking place on Friday.
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Rahmani said the attackers planted mines to stop reinforcements from coming to help the government forces fend off the attack. His claim could not be independently confirmed and the government did not immediately respond to it.
The newly-crowned German champions, who had won their previous two home matches at Allianz Arena 6-0, came under the cosh as Joaquin Correa hit the crossbar with a header and Pablo Sarabia squandered a glorious chance for the visitors.
"Real Madrid could have scored more goals today, but Juventus and Buffon were great".
"For the penalty, my heart was beating hard, but I tried to stay calm".
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The letter adds that Russian intelligence services "view at least some of its defectors as legitimate targets for assassination". The report concluded: 'The situation around the Skripals looks more and more like a forcible detention or imprisonment'.
The match looked destined for extra time until the referee's penalty decision. Juventus players stormed toward English referee Michael Oliver, who apparently had help from his behind-the-goal assistant to make the call.
Then it was Real Madrid's turn to attack, as Gareth Bale came close to answering with what would have been an incredible backheel goal.
AS admitted the European champions went from "the panic to the semi-finals", while Marca simply believed: "It was a penalty".
Only four days earlier, Juventus had benefitted from two penalties - the second after Juve forward Gonzalo Higuain's legs crumpled without any apparent contact from his marker - to win 4-2 at Benevento in Serie A.
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The latest set of cuts come in the wake of a weak United Kingdom market, with Jaguar sales down 26 per cent so far this year, compared with last year, while demand for Land Rovers in Britain is down 20 per cent.