Raikkonen admitted that Kvyat had caught him out under braking, with the Toro Rosso appearing in his mirrors too late for him to react and get out of the corner.
"Not exactly the end of the race I was hoping for but it is what it is," Raikkonen said.
"My tyres were degrading and whilst I could manage to stay in position after the first restart, at the second the tyres were too cold and so I lost three positions and from then on I was struggling.
"The incident with Daniil Kvyat ended my race but I was going nowhere anyway.
"When I looked at the straight he was quite far behind, but when I was turning in I saw him in the corner of my eye but then it was too late to react."