Vin Diesel & Tyrese Gibson to Paul Walker ' You Will Always Be My Brother'

On the second anniversary of Paul Walker's tragic death, two of his Fast and Furious costars are paying tribute to their late friend.

Tyrese Gibson shared a photo of the two together on Instagram, confessing that he continues to struggle with Walker's death.

Paul Walker and Tyrese Gibson. Photo: Instagram

"It's still not easy...... 2 years ago today... We lost our brother..... Today I'm just gonna lay low and process..... Clarity through Prayers and perspective is what I always seek and pray for," Gibson, 36, captioned the photo. "With a heavy heart I post this..... Please continue to pray for the Walker family and his real friends who was with him every single day.... They're some of the best and strongest people I know...... I know you're in heaven smiling and rooting for us all."

Vin Diesel also took to social media to remember his "brother."

Vin Diesel and Paul Walker. Photo: Instagram

"No matter where you are in the universe…You will always be my brother," Diesel wrote on Facebook.

The actor also posted a photo of the two together on Instagram, superimposed with text that reads, "Brotherhood has no limits."

Paul Walker, Vin Diesel and Tyrese Gibson. Photo: Getty

Diesel, 48, has paid tribute to his late friend several times in the past. In August he dedicated his Teen Choice Award for Furious 7 to Walker.

But perhaps the biggest way he has honoured Walker was when he named his youngest daughter, Pauline, after him.

"He was in the room [when she was born]. There’s no other person that I was thinking about as I was cutting this umbilical cord. I just … knew he was there," he said. "It felt like a way to keep his memory a part of my family and a part of my world."

Walker, who was 40, died in a car accident on Nov. 30, 2013, when the Porsche he was riding in crashed and exploded in Santa Clarita, California. Both his daughter, Meadow, and his father have filed respective wrongful death lawsuits against Porsche, claiming that the car lacked safety features that could have prevented Walker's death.

Jodi Guglielmi writes for People.com