CRJ 900 First Officer reported an engine temperature exceedance at cruise and then during descent a bleed warning malfunction resulting in a cabin depressurization. The flight diverted to an alternate airport and landed safely.

Narrative

On our second leg of the day from ZZZ to ZZZ1; the Captain was Pilot Flying and I was Pilot Monitoring. We were at our cruise altitude of 35;000 feet for a while when we unexpectedly felt a vibration and jolt through the aircraft that lasted for a few seconds. We initially looked at each other and wondered if it was turbulence. At that moment; the Captain pointed out the rising Interstage Turbine Temperature (ITT) on the Number 2 engine and then it exceeded the ITT limitation reaching upwards of 1000 C. The Captain began to idle the affected engine and simultaneously the parameters began to roll back. Simultaneously; we agreed that I would [request priority handling] with Center and then request an immediate descent down to FL250. I [requested priority handling] and requested a descent down to FL250 and we were approved to descend. As we started to descend; we had multiple quick Crew Alert System (CAS) caution message pop ups. I briefly saw the R Bleed Caution and then it disappeared and we were left with R ITT exceedance status message. As we were descending the Captain noticed that the cabin [altitude] was rising and we both put on our oxygen masks. At around 25;000 feet the engine started operating normally again and the cabin [altitude] stabilized. We removed the masks and the Captain continued as Pilot Flying and I continued with my Pilot Monitoring duties. We agreed on diverting to ZZZ2 and received the ATIS; built the approach; received the landing data and did our checklists including the QRH status for R ITT exceedance. ATC vectored us for ILS XXC and the Captain made a PA for the Flight Attendants and another PA to reassure the passengers. We safely landed on Runway XXC and had no further issues after. The fire crews assessed the engine to ensure no damage and then we taxied to the gate. I completed the walk around after and noticed what seemed to be a dent on one of the N1 fan blades on the right engine; however it was hard to tell completely.Cause: In the logbook was a report the day prior from the crew who experienced a R ITT exceedance on Takeoff.