As you can see in the table below the letters are quite similar.
name
|
Arabic
|
Syriac
|
name
|
Arabic
|
Syriac
|
Alaph
|
ا/ء
|
ܐ
|
Lamadh
|
ل
|
ܠ
|
Beth
|
ب
|
ܒ
|
Meem
|
م
|
ܡ
|
Gamal
|
ج
|
ܓ
|
Noon
|
ن
|
ܢܢ
|
Dalath
|
ﺩ
|
ܕ
|
Simkath
|
ܣ
| |
Heh
|
ه
|
ܗ
|
'E
|
ع
|
ܥ
|
Waw
|
ﻭ
|
ܘ
|
Peh
|
ف
|
ܦ
|
Zain
|
ﺯ
|
ܙ
|
Sad'e
|
ص
|
ܨ
|
Heth
|
ح
|
ܚ
|
Qoph
|
ﻕ
|
ܩ
|
Teth
|
ﻁ
|
ܛ
|
Resh
|
ﺭ
|
ܪ
|
Yodh
|
ي
|
ܝ
|
Sheen
|
س /ش
|
ܫ
|
Kaph
|
ﻛ/ك
|
ܟܟ
|
Taw
|
ﺕ
| ܬ |
Also take a look at the Arabic-Serto table.