Barakallahu laka

بَارَكَ اللهُ لَكَ

Meaning:
May Allah grant you Barakaat (blessings)
(Book: Bukhari 5367, 5155, 6386)

Barakllahu aliaka

بَارَكَ اللهُ عَلَيْكَ

Meaning:
May Allah bestow His Blessing on you.
(Book: Bukhari 6387)

Baarakallahu laka va baaraka ‘alaika va jama’a baynakumaa fil khayr

بَارَكَ اللهُ لَكَ وَبَارَكَ عَلَيْكَ وَجَمَعَ بَيْنَكُمَا فىِ الْخَيْرِ

(Book: Tirmidhi 1011)

Baarakallahu laka va baaraka ‘alaika va jama’a baynakumaa fi khayrin

بَارَكَ اللهُ لَكَ وَبَارَكَ عَلَيْكَ وَجَمَعَ بَيْنَكُمَا فىِ خَيْرٍ

Meaning:
May Allah bless for you, and may He bless on you, and combine both of you in good (works).
(Book: Abu Dawud 1819)