CL65 FLT CREW HAS A RWY INCURSION AT CYUL.

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WE LANDED AND ROLLED OUT TO THE END AS INSTRUCTED; AND THEN WERE TOLD TO 'HOLD SHORT RWY 10.' RWY 28 WAS ACTIVE; AS WERE THE PARALLEL RWY 24L/R (WE LANDED RWY 24R). WE ROLLED TO THE END OF RWY 24R AND MADE THE SLIGHT L TURN TO HOLD SHORT OF THE DEPARTING RWY. AS THE CAPT LOOKED L; THE CTLR YELLED AT US TO STOP AND SAID THAT WE'D MISSED THE HOLD SHORT LINE. WE APOLOGIZED AND WERE STUNNED TO SEE A DEPARTING AIRBUS(?) ROTATE ON TKOF JUST TO OUR L. WE REMAINED CLR OF THE RWY; BUT HAD DEFINITELY TAXIED WELL BEYOND THE HOLD SHORT LINE (WHICH WE NEVER SAW). THE CTLR'S THICK FRENCH ACCENT AND OUR UNFAMILIARITY COMBINED WITH FATIGUE WERE CONTRIBUTING FACTORS. BOTH OF US HAD OUR RWY DIAGRAMS OUT AND HAD BRIEFED OUR EXIT FROM THE RWY AT TXWY G. WE EXPECTED TO CROSS RWY 28 (WHICH THE CTLR CALLED 'RWY 10') AND KNEW THAT THERE WAS DEPARTING TFC ON THAT RWY. WE WERE CONFUSED BY THE SLIGHT TURN OF THE SHORT TXWY BTWN RWYS AND WERE NOT CLR ABOUT WHERE TO HOLD SHORT OF RWY 28. WE OBVIOUSLY MISSED THE HOLD SHORT LINE; BUT THANKS TO THE CAPT'S LOOKING L; WE DID NOT END UP ON THE DEPARTING RWY. THE CTLR YELLED FOR US TO STOP IMMEDIATELY; BUT HE DID SO LONG AFTER WE'D CROSSED THE HOLD SHORT LINE.