Noni Madueke (61') gave Arsenal the lead after heading home Piero Hincapie's cross, but Brentford equalized through Keane Lewis-Potter (71') to make it 1-1.
This result means Arsenal failed to maintain their six-point lead over second-placed Manchester City. The gap between the two teams has now closed to four points, but Arteta urged his team not to panic and to remain calm.
