This was done in the key of C at Soul Survivor, so capo 5 with these chords.

Verse 1:
G                    C    G
In my wrestling and in my doubts
C      G            D
In my failures You won't walk out
G                    C       G
Your great love will lead me through
C          G             D        G
You are my peace in my troubled sea
C           G            D        G
You are my peace in my troubled sea

Verse 2:
In the silence, You won't let go
In my questions, Your truth will hold 
Your great love will lead me through
You are my peace in my troubled sea
You are my peace in my troubled sea

Chorus:
C        G      Em      D
My Lighthouse, My lighthouse
C               G         Em            D
Shining in the darkness, I will follow You, whoa
C        G       Em      D
My Lighthouse, My Lighthouse
C                 G        Em             D              C        G      D
I will trust the promise, You will carry me safe to shore (Oh-ohh-ohh-oh-oh)
            C         G     D
Safe to Shore (Oh-ohh-ohh-oh-oh)
            C         G     D
Safe to Shore (Oh-ohh-ohh-oh-oh)
            G
Safe to Shore

Verse 3:
I won't fear what tomorrow brings
With each morning I'll rise and sing
My God's love will lead me through
You are the peace in my troubled sea
You are the peace in my troubled sea

Bridge:
C                Em        D2
Fire before us, You're the brightest
C        G       Em      D2
You will lead us safe to shore

By Maurice Yap